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LightRoom 4.3 print module and JPEG dimensions in QTR Gui

LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-24 by stephane_bosman

Hi

I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.

QTR Gui does not interpret the image PPI correctly.

If I produce the JPEG with the export module of LightRoom than QTR Gui interprets the dimensions correctly.

I suspect the bug is in LightRoom. However, Bridge and PhotoShop both interpret the dimensions correcly for both JPEG files. This bug is ancient, it was already there in LightRoom 3.4, so I dont expect Adobe to do anything about it.

Since other programs find the correct dimension information, it must be there in the JPEG. Maye there are redundant tags and the LightRoom printmodule only updates some of them, I dont know, but the end result is pretty annoying.

Am I the only one having this problem? Is there any hope of having QTR Gui modified to accomodate the LightRoom quirk?

Thanks for yor attention.

Stephane

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-24 by john

On Dec 19th, Roy gave the the following reply to a question about JPEG sizing problem.

"This sounds like an issue that happens with some JPGs. Different
programs store different info
for sizing and this can confuse the situation.

So if you are using JPGs the best thing to try is to switch to TIF files."

Roy

It sounds like what you are finding too.
Hope this helps.

Peter




--- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@...> wrote:
Show quoted textHide quoted text
>
> Hi
> 
> I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
> 
> QTR Gui does not interpret the image PPI correctly.
> 
> If I produce the JPEG with the export module of LightRoom than QTR Gui interprets the dimensions correctly.
> 
> I suspect the bug is in LightRoom. However, Bridge and PhotoShop both interpret the dimensions correcly for both JPEG files. This bug is ancient, it was already there in LightRoom 3.4, so I dont expect Adobe to do anything about it.
> 
> Since other programs find the correct dimension information, it must be there in the JPEG. Maye there are redundant tags and the LightRoom printmodule only updates some of them, I dont know, but the end result is pretty annoying.
> 
> Am I the only one having this problem? Is there any hope of having QTR Gui modified to accomodate the LightRoom quirk?
> 
> Thanks for yor attention.
> 
> Stephane
>

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-25 by stephane_bosman

Hi

Thanks for the input, but I had read that thread before posting.

the tihng is, the LightRoom print module does not allow to output a TIF file.

And  I have had the same problem with a JPEG saved by PhotoShop.

For me PhotoShop is the reference for photo-related software. If the JPEG standard is not unambiguous, then programs pretending to read JPEG files should read correctly JPEG files from PhotoShop.

The behaviour with the PHotoShop JPEG was bizarre. The image dimensions appeared correcly in the PrintGUI preview, but on paper it got scaled up at 1:1.

There is something not right going on.

By the way, is there a way to print with QTR on Windows using the command line?

Cheers!

--- In QuadtoneRIP@yahoogroups.com, "john" <zonepeter@...> wrote:
Show quoted textHide quoted text
>
> On Dec 19th, Roy gave the the following reply to a question about JPEG sizing problem.
> 
> "This sounds like an issue that happens with some JPGs. Different
> programs store different info
> for sizing and this can confuse the situation.
> 
> So if you are using JPGs the best thing to try is to switch to TIF files."
> 
> Roy
> 
> It sounds like what you are finding too.
> Hope this helps.
> 
> Peter
> 
> 
> 
> 
> --- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@> wrote:
> >
> > Hi
> > 
> > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
> > 
> > QTR Gui does not interpret the image PPI correctly.
> > 
> > If I produce the JPEG with the export module of LightRoom than QTR Gui interprets the dimensions correctly.
> > 
> > I suspect the bug is in LightRoom. However, Bridge and PhotoShop both interpret the dimensions correcly for both JPEG files. This bug is ancient, it was already there in LightRoom 3.4, so I dont expect Adobe to do anything about it.
> > 
> > Since other programs find the correct dimension information, it must be there in the JPEG. Maye there are redundant tags and the LightRoom printmodule only updates some of them, I dont know, but the end result is pretty annoying.
> > 
> > Am I the only one having this problem? Is there any hope of having QTR Gui modified to accomodate the LightRoom quirk?
> > 
> > Thanks for yor attention.
> > 
> > Stephane
> >
>

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-26 by jimth1937

Hi,
 
While the Lightroom print module may not allow output to a TIF file the solution is simple.

Go to File/Export and you can save it as a TIF file.  

Hopefully this solves your problem.

Cheers & Happy New Year.

Jim Thyer


--- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@...> wrote:
Show quoted textHide quoted text
>
> Hi
> 
> Thanks for the input, but I had read that thread before posting.
> 
> the tihng is, the LightRoom print module does not allow to output a TIF file.
> 
> And  I have had the same problem with a JPEG saved by PhotoShop.
> 
> For me PhotoShop is the reference for photo-related software. If the JPEG standard is not unambiguous, then programs pretending to read JPEG files should read correctly JPEG files from PhotoShop.
> 
> The behaviour with the PHotoShop JPEG was bizarre. The image dimensions appeared correcly in the PrintGUI preview, but on paper it got scaled up at 1:1.
> 
> There is something not right going on.
> 
> By the way, is there a way to print with QTR on Windows using the command line?
> 
> Cheers!
> 
> --- In QuadtoneRIP@yahoogroups.com, "john" <zonepeter@> wrote:
> >
> > On Dec 19th, Roy gave the the following reply to a question about JPEG sizing problem.
> > 
> > "This sounds like an issue that happens with some JPGs. Different
> > programs store different info
> > for sizing and this can confuse the situation.
> > 
> > So if you are using JPGs the best thing to try is to switch to TIF files."
> > 
> > Roy
> > 
> > It sounds like what you are finding too.
> > Hope this helps.
> > 
> > Peter
> > 
> > 
> > 
> > 
> > --- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@> wrote:
> > >
> > > Hi
> > > 
> > > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
> > > 
> > > QTR Gui does not interpret the image PPI correctly.
> > > 
> > > If I produce the JPEG with the export module of LightRoom than QTR Gui interprets the dimensions correctly.
> > > 
> > > I suspect the bug is in LightRoom. However, Bridge and PhotoShop both interpret the dimensions correcly for both JPEG files. This bug is ancient, it was already there in LightRoom 3.4, so I dont expect Adobe to do anything about it.
> > > 
> > > Since other programs find the correct dimension information, it must be there in the JPEG. Maye there are redundant tags and the LightRoom printmodule only updates some of them, I dont know, but the end result is pretty annoying.
> > > 
> > > Am I the only one having this problem? Is there any hope of having QTR Gui modified to accomodate the LightRoom quirk?
> > > 
> > > Thanks for yor attention.
> > > 
> > > Stephane
> > >
> >
>

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-26 by stephane_bosman

Well, that is what I do. Like most QTR users, I am not a total beginner looking for first level support answers.

In case you didn't notice there is a significant difference of functionality between the print and the export modules.

I am interested in using the LightRoom print module.

--- In QuadtoneRIP@yahoogroups.com, "jimth1937" <jimth@...> wrote:
Show quoted textHide quoted text
>
> Hi,
>  
> While the Lightroom print module may not allow output to a TIF file the solution is simple.
> 
> Go to File/Export and you can save it as a TIF file.  
> 
> Hopefully this solves your problem.
> 
> Cheers & Happy New Year.
> 
> Jim Thyer
> 
> 
> --- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@> wrote:
> >
> > Hi
> > 
> > Thanks for the input, but I had read that thread before posting.
> > 
> > the tihng is, the LightRoom print module does not allow to output a TIF file.
> > 
> > And  I have had the same problem with a JPEG saved by PhotoShop.
> > 
> > For me PhotoShop is the reference for photo-related software. If the JPEG standard is not unambiguous, then programs pretending to read JPEG files should read correctly JPEG files from PhotoShop.
> > 
> > The behaviour with the PHotoShop JPEG was bizarre. The image dimensions appeared correcly in the PrintGUI preview, but on paper it got scaled up at 1:1.
> > 
> > There is something not right going on.
> > 
> > By the way, is there a way to print with QTR on Windows using the command line?
> > 
> > Cheers!
> > 
> > --- In QuadtoneRIP@yahoogroups.com, "john" <zonepeter@> wrote:
> > >
> > > On Dec 19th, Roy gave the the following reply to a question about JPEG sizing problem.
> > > 
> > > "This sounds like an issue that happens with some JPGs. Different
> > > programs store different info
> > > for sizing and this can confuse the situation.
> > > 
> > > So if you are using JPGs the best thing to try is to switch to TIF files."
> > > 
> > > Roy
> > > 
> > > It sounds like what you are finding too.
> > > Hope this helps.
> > > 
> > > Peter
> > > 
> > > 
> > > 
> > > 
> > > --- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@> wrote:
> > > >
> > > > Hi
> > > > 
> > > > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
> > > > 
> > > > QTR Gui does not interpret the image PPI correctly.
> > > > 
> > > > If I produce the JPEG with the export module of LightRoom than QTR Gui interprets the dimensions correctly.
> > > > 
> > > > I suspect the bug is in LightRoom. However, Bridge and PhotoShop both interpret the dimensions correcly for both JPEG files. This bug is ancient, it was already there in LightRoom 3.4, so I dont expect Adobe to do anything about it.
> > > > 
> > > > Since other programs find the correct dimension information, it must be there in the JPEG. Maye there are redundant tags and the LightRoom printmodule only updates some of them, I dont know, but the end result is pretty annoying.
> > > > 
> > > > Am I the only one having this problem? Is there any hope of having QTR Gui modified to accomodate the LightRoom quirk?
> > > > 
> > > > Thanks for yor attention.
> > > > 
> > > > Stephane
> > > >
> > >
> >
>

Re: [QuadtoneRIP] Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-26 by Jim Thyer

Lightroom is designed for general photographic users.  The Print module has 2 output (or Export) options, either to paper (Print) or to a file to take to a local shop for printing (jpeg format).  There is no point in outputting printing to other formats, as very few users want them.  The only example for other formats I can think of is TIFF for those using QTR.  After all it is a print module, so we only expect formats which can be directly printed, either on your own printer or through a photographic shop.

Some users want to do more with their pictures than Lightroom is capable of doing.  Also they do not want the lossy jpeg output of their files, but want maximum quality for future work.  This is why we have the “File/Export” option, which is available for all modules of Lightroom.  This allows saving the file as JPEG, PSD, TIFF or DNG formats.  

I hope this longer commentary explains why, I believe, Lightroom is set up the way it is.

Jim Thyer
Show quoted textHide quoted text
From: stephane_bosman 
Sent: Thursday, December 27, 2012 8:15 AM
To: QuadtoneRIP@yahoogroups.com 
Subject: [QuadtoneRIP] Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

  
Well, that is what I do. Like most QTR users, I am not a total beginner looking for first level support answers.

In case you didn't notice there is a significant difference of functionality between the print and the export modules.

I am interested in using the LightRoom print module.

--- In mailto:QuadtoneRIP%40yahoogroups.com, "jimth1937" <jimth@...> wrote:
>
> Hi,
> 
> While the Lightroom print module may not allow output to a TIF file the solution is simple.
> 
> Go to File/Export and you can save it as a TIF file. 
> 
> Hopefully this solves your problem.
> 
> Cheers & Happy New Year.
> 
> Jim Thyer
> 
> 
> --- In mailto:QuadtoneRIP%40yahoogroups.com, "stephane_bosman" <stb@> wrote:
> >
> > Hi
> > 
> > Thanks for the input, but I had read that thread before posting.
> > 
> > the tihng is, the LightRoom print module does not allow to output a TIF file.
> > 
> > And I have had the same problem with a JPEG saved by PhotoShop.
> > 
> > For me PhotoShop is the reference for photo-related software. If the JPEG standard is not unambiguous, then programs pretending to read JPEG files should read correctly JPEG files from PhotoShop.
> > 
> > The behaviour with the PHotoShop JPEG was bizarre. The image dimensions appeared correcly in the PrintGUI preview, but on paper it got scaled up at 1:1.
> > 
> > There is something not right going on.
> > 
> > By the way, is there a way to print with QTR on Windows using the command line?
> > 
> > Cheers!
> > 
> > --- In mailto:QuadtoneRIP%40yahoogroups.com, "john" <zonepeter@> wrote:
> > >
> > > On Dec 19th, Roy gave the the following reply to a question about JPEG sizing problem.
> > > 
> > > "This sounds like an issue that happens with some JPGs. Different
> > > programs store different info
> > > for sizing and this can confuse the situation.
> > > 
> > > So if you are using JPGs the best thing to try is to switch to TIF files."
> > > 
> > > Roy
> > > 
> > > It sounds like what you are finding too.
> > > Hope this helps.
> > > 
> > > Peter
> > > 
> > > 
> > > 
> > > 
> > > --- In mailto:QuadtoneRIP%40yahoogroups.com, "stephane_bosman" <stb@> wrote:
> > > >
> > > > Hi
> > > > 
> > > > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
> > > > 
> > > > QTR Gui does not interpret the image PPI correctly.
> > > > 
> > > > If I produce the JPEG with the export module of LightRoom than QTR Gui interprets the dimensions correctly.
> > > > 
> > > > I suspect the bug is in LightRoom. However, Bridge and PhotoShop both interpret the dimensions correcly for both JPEG files. This bug is ancient, it was already there in LightRoom 3.4, so I dont expect Adobe to do anything about it.
> > > > 
> > > > Since other programs find the correct dimension information, it must be there in the JPEG. Maye there are redundant tags and the LightRoom printmodule only updates some of them, I dont know, but the end result is pretty annoying.
> > > > 
> > > > Am I the only one having this problem? Is there any hope of having QTR Gui modified to accomodate the LightRoom quirk?
> > > > 
> > > > Thanks for yor attention.
> > > > 
> > > > Stephane
> > > >
> > >
> >
>





[Non-text portions of this message have been removed]

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-27 by stephane_bosman

I have no problem with the design choices of LightRoom. I do have a problem with its lack of consistency in its handling of Jpeg metadata. A jpeg from the export modules contains ppi information understood by QTRGui, while a jpeg from its print module does not.

Part of the problem might be with QTRGui, because other programs get the proper ppi information from whatever jpeg LightRoom outputs.

I have more faith in QTRGui being corrected than LightRoom, though.

--- In QuadtoneRIP@yahoogroups.com, "Jim Thyer" <jimth@...> wrote:
Show quoted textHide quoted text
>
> Lightroom is designed for general photographic users.  The Print module has 2 output (or Export) options, either to paper (Print) or to a file to take to a local shop for printing (jpeg format).  There is no point in outputting printing to other formats, as very few users want them.  The only example for other formats I can think of is TIFF for those using QTR.  After all it is a print module, so we only expect formats which can be directly printed, either on your own printer or through a photographic shop.
> 
> Some users want to do more with their pictures than Lightroom is capable of doing.  Also they do not want the lossy jpeg output of their files, but want maximum quality for future work.  This is why we have the “File/Export” option, which is available for all modules of Lightroom.  This allows saving the file as JPEG, PSD, TIFF or DNG formats.  
> 
> I hope this longer commentary explains why, I believe, Lightroom is set up the way it is.
> 
> Jim Thyer
> 
> 
> 
> From: stephane_bosman 
> Sent: Thursday, December 27, 2012 8:15 AM
> To: QuadtoneRIP@yahoogroups.com 
> Subject: [QuadtoneRIP] Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui
> 
>   
> Well, that is what I do. Like most QTR users, I am not a total beginner looking for first level support answers.
> 
> In case you didn't notice there is a significant difference of functionality between the print and the export modules.
> 
> I am interested in using the LightRoom print module.
> 
> --- In mailto:QuadtoneRIP%40yahoogroups.com, "jimth1937" <jimth@> wrote:
> >
> > Hi,
> > 
> > While the Lightroom print module may not allow output to a TIF file the solution is simple.
> > 
> > Go to File/Export and you can save it as a TIF file. 
> > 
> > Hopefully this solves your problem.
> > 
> > Cheers & Happy New Year.
> > 
> > Jim Thyer
> > 
> > 
> > --- In mailto:QuadtoneRIP%40yahoogroups.com, "stephane_bosman" <stb@> wrote:
> > >
> > > Hi
> > > 
> > > Thanks for the input, but I had read that thread before posting.
> > > 
> > > the tihng is, the LightRoom print module does not allow to output a TIF file.
> > > 
> > > And I have had the same problem with a JPEG saved by PhotoShop.
> > > 
> > > For me PhotoShop is the reference for photo-related software. If the JPEG standard is not unambiguous, then programs pretending to read JPEG files should read correctly JPEG files from PhotoShop.
> > > 
> > > The behaviour with the PHotoShop JPEG was bizarre. The image dimensions appeared correcly in the PrintGUI preview, but on paper it got scaled up at 1:1.
> > > 
> > > There is something not right going on.
> > > 
> > > By the way, is there a way to print with QTR on Windows using the command line?
> > > 
> > > Cheers!
> > > 
> > > --- In mailto:QuadtoneRIP%40yahoogroups.com, "john" <zonepeter@> wrote:
> > > >
> > > > On Dec 19th, Roy gave the the following reply to a question about JPEG sizing problem.
> > > > 
> > > > "This sounds like an issue that happens with some JPGs. Different
> > > > programs store different info
> > > > for sizing and this can confuse the situation.
> > > > 
> > > > So if you are using JPGs the best thing to try is to switch to TIF files."
> > > > 
> > > > Roy
> > > > 
> > > > It sounds like what you are finding too.
> > > > Hope this helps.
> > > > 
> > > > Peter
> > > > 
> > > > 
> > > > 
> > > > 
> > > > --- In mailto:QuadtoneRIP%40yahoogroups.com, "stephane_bosman" <stb@> wrote:
> > > > >
> > > > > Hi
> > > > > 
> > > > > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
> > > > > 
> > > > > QTR Gui does not interpret the image PPI correctly.
> > > > > 
> > > > > If I produce the JPEG with the export module of LightRoom than QTR Gui interprets the dimensions correctly.
> > > > > 
> > > > > I suspect the bug is in LightRoom. However, Bridge and PhotoShop both interpret the dimensions correcly for both JPEG files. This bug is ancient, it was already there in LightRoom 3.4, so I dont expect Adobe to do anything about it.
> > > > > 
> > > > > Since other programs find the correct dimension information, it must be there in the JPEG. Maye there are redundant tags and the LightRoom printmodule only updates some of them, I dont know, but the end result is pretty annoying.
> > > > > 
> > > > > Am I the only one having this problem? Is there any hope of having QTR Gui modified to accomodate the LightRoom quirk?
> > > > > 
> > > > > Thanks for yor attention.
> > > > > 
> > > > > Stephane
> > > > >
> > > >
> > >
> >
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-28 by Don

Take Roy's advice and export your file as a Tif formatted file. There isn't any advantage to exporting to JPG for printing in QTR.

You should create a a master edited file in LR for archiving and then do what you need to do in QTR for printing using an exported TIF file. 

> 
> I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-31 by stephane_bosman

I understand what you are saying.

However, there ARE advantages to using the print module instead of the export module.

The print module allows to design prints with precise positionning on the page, a nice image caption below the photo, etc.. and save them as prints, ready to be used again.

The export module does not allow any of this because, well, it was not made for print.

And printing is what QTR is all about, isn't it?

SO, I'm back to square one, printing to QTR from the LR print module.

I am advancing, though, by using an image converter to convert the jpeg to tif, all automated wih a utility that watches my output folder and run the conversion to tif and outputs to the folder watched by QTR.


--- In QuadtoneRIP@...m, "Don" <donsbryant@...> wrote:
Show quoted textHide quoted text
>
> Take Roy's advice and export your file as a Tif formatted file. There isn't any advantage to exporting to JPG for printing in QTR.
> 
> You should create a a master edited file in LR for archiving and then do what you need to do in QTR for printing using an exported TIF file. 
> 
> > 
> > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
>

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2012-12-31 by Sidney

While working with LR, I have never liked the print module and colorspace handling of LR.

My BW workflow is as follows (Mac):

-editing the Raw file in LR
-export the file with 'edit in PS' command and convert straight to greyscale colorspace.
-if necessary, I do additional retouching, then save+close the file.
-it is placed as a Tiff file next to the original Raw file in LR.
(at this point, NO new editing should be done in LR as it would otherwise be reconverted to Prophoto colorspace)

Printing:

-I have installed QTR-Print-Tool on my computer and have linked it to LR as an external editing tool (just like the 'edit in PS' command).
QTR-Print-Tool is a small but powerful RIP software that bypasses any colorspace manipulation by the OS. (it is independant from the regular QTR Gui)

-export with 'edit in QTR-Print_Tool' command (edit ORIGINAL!, only this option will keep the greyscale colorspace intact).
-the image file is opened automatically in QTR-Print-Tool, where it can be resized and moved around the final paper size.
-from within this tool you launch the print command, the standard QTR Gui will open up and you proceed as usual.

Maybe this could be helpful to some.

Happy New Year!

Sidney

--- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@...> wrote:
Show quoted textHide quoted text
>
> I understand what you are saying.
> 
> However, there ARE advantages to using the print module instead of the export module.
> 
> The print module allows to design prints with precise positionning on the page, a nice image caption below the photo, etc.. and save them as prints, ready to be used again.
> 
> The export module does not allow any of this because, well, it was not made for print.
> 
> And printing is what QTR is all about, isn't it?
> 
> SO, I'm back to square one, printing to QTR from the LR print module.
> 
> I am advancing, though, by using an image converter to convert the jpeg to tif, all automated wih a utility that watches my output folder and run the conversion to tif and outputs to the folder watched by QTR.
> 
> 
> --- In QuadtoneRIP@yahoogroups.com, "Don" <donsbryant@> wrote:
> >
> > Take Roy's advice and export your file as a Tif formatted file. There isn't any advantage to exporting to JPG for printing in QTR.
> > 
> > You should create a a master edited file in LR for archiving and then do what you need to do in QTR for printing using an exported TIF file. 
> > 
> > > 
> > > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
> >
>

Re: [QuadtoneRIP] Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2013-01-01 by Roy Harrington

I've done some looking into this whole jpeg issue.  The whole thing is a bit
complicated but I think I understand some of it now.

Originally there was a simple jpeg compression file that did not have
resolution information -- it just compressed the image data.  Soon after
a header called JFIF was added with some more info -- specifically
the resolution.  Most older programs used this for a long time.  More recently
a more general approach was started -- called EXIF data which most people
recognize from camera data.   The file extension .jpg and .jpeg are now used
for all these different formats.  So different programs write out
different headers
-- in fact Lightroom seems to use one for export and a different one for print.
(QTR is not the only program affected:  see
http://forums.adobe.com/message/2977973
if you want to see an unending discussion)

QTR on the PC has two distinct parts the QTRgui which is written in a high level
language with file reading builtin and a low level part which actually
writes to the
printer.  So QTRgui understands some more formats than the low level driver.
The driver uses open source libraries for reading files and the jpeg
library does not
look at or understand the EXIF version of the header --only the JFIF version.
This is the main cause of the print size problems.  Whether this can be easily
resolved is still unknown.

Another thing to consider is that in Lightroom the export and print
modules have
pretty different concepts in mind.  The export is pretty
straightforward -- it simply
exports just images -- conversions and formats are always one image at a time.
The print module on the other hand is a page formatting function.
When you print to
jpeg file you are formatting an entire page and outputting that full
page as a jpeg.
It can contain multiple images and most important includes all the borders and
margins.  So taking this formatted page and putting it into QTRgui which also
does page formatting is possible but needs careful thought of what's happening.
In particular LR formatting a 8.5x11 sheet will output an 8.5x11 jpg.
But reading
this into QTRgui for printing on 8.5x11 paper is a problem because of
the margins.
Typically the largest image is 8.25x10.75 on most Epson printers
(non-borderless).

Needless to say there are a lot of considerations here.  I'll try to
find a workflow
that accommodates this.

Thanks,
Roy

BTW, there's a little confusion of terminology here.  QTRgui is a
program only on
the PC and Print-Tool is Mac only.  I think QTRgui is being mentioned on the Mac
but I think its really referring to the print dialog page.

Roy



On Mon, Dec 31, 2012 at 7:09 AM, Sidney <skapuskar@...> wrote:
> While working with LR, I have never liked the print module and colorspace handling of LR.
>
> My BW workflow is as follows (Mac):
>
> -editing the Raw file in LR
> -export the file with 'edit in PS' command and convert straight to greyscale colorspace.
> -if necessary, I do additional retouching, then save+close the file.
> -it is placed as a Tiff file next to the original Raw file in LR.
> (at this point, NO new editing should be done in LR as it would otherwise be reconverted to Prophoto colorspace)
>
> Printing:
>
> -I have installed QTR-Print-Tool on my computer and have linked it to LR as an external editing tool (just like the 'edit in PS' command).
> QTR-Print-Tool is a small but powerful RIP software that bypasses any colorspace manipulation by the OS. (it is independant from the regular QTR Gui)
>
> -export with 'edit in QTR-Print_Tool' command (edit ORIGINAL!, only this option will keep the greyscale colorspace intact).
> -the image file is opened automatically in QTR-Print-Tool, where it can be resized and moved around the final paper size.
> -from within this tool you launch the print command, the standard QTR Gui will open up and you proceed as usual.
>
> Maybe this could be helpful to some.
>
> Happy New Year!
>
> Sidney
>
> --- In QuadtoneRIP@yahoogroups.com, "stephane_bosman" <stb@...> wrote:
>>
>> I understand what you are saying.
>>
>> However, there ARE advantages to using the print module instead of the export module.
>>
>> The print module allows to design prints with precise positionning on the page, a nice image caption below the photo, etc.. and save them as prints, ready to be used again.
>>
>> The export module does not allow any of this because, well, it was not made for print.
>>
>> And printing is what QTR is all about, isn't it?
>>
>> SO, I'm back to square one, printing to QTR from the LR print module.
>>
>> I am advancing, though, by using an image converter to convert the jpeg to tif, all automated wih a utility that watches my output folder and run the conversion to tif and outputs to the folder watched by QTR.
>>
>>
>> --- In QuadtoneRIP@yahoogroups.com, "Don" <donsbryant@> wrote:
>> >
>> > Take Roy's advice and export your file as a Tif formatted file. There isn't any advantage to exporting to JPG for printing in QTR.
>> >
>> > You should create a a master edited file in LR for archiving and then do what you need to do in QTR for printing using an exported TIF file.
>> >
>> > >
>> > > I print to a JPEG with the LightRoom print module and then try to print the resulting JPEG with QTR Gui.
>> >
>>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>



-- 
Roy Harrington
roy@...
www.harrington.com

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2013-01-01 by stephane_bosman

Thanks Roy. You are exactly on the problem I have.

In the Lightroom print module, one can choose a custom size for the resulting jpeg. I use a size a bit smaller than the print area on the target paper size and tell QTRGui to print centered.


Happy new year to all!


--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
Show quoted textHide quoted text
>
> I've done some looking into this whole jpeg issue.  The whole thing is a bit
> complicated but I think I understand some of it now.
> 
> Originally there was a simple jpeg compression file that did not have
> resolution information -- it just compressed the image data.  Soon after
> a header called JFIF was added with some more info -- specifically
> the resolution.  Most older programs used this for a long time.  More recently
> a more general approach was started -- called EXIF data which most people
> recognize from camera data.   The file extension .jpg and .jpeg are now used
> for all these different formats.  So different programs write out
> different headers
> -- in fact Lightroom seems to use one for export and a different one for print.
> (QTR is not the only program affected:  see
> http://forums.adobe.com/message/2977973
> if you want to see an unending discussion)
> 
> QTR on the PC has two distinct parts the QTRgui which is written in a high level
> language with file reading builtin and a low level part which actually
> writes to the
> printer.  So QTRgui understands some more formats than the low level driver.
> The driver uses open source libraries for reading files and the jpeg
> library does not
> look at or understand the EXIF version of the header --only the JFIF version.
> This is the main cause of the print size problems.  Whether this can be easily
> resolved is still unknown.
> 
> Another thing to consider is that in Lightroom the export and print
> modules have
> pretty different concepts in mind.  The export is pretty
> straightforward -- it simply
> exports just images -- conversions and formats are always one image at a time.
> The print module on the other hand is a page formatting function.
> When you print to
> jpeg file you are formatting an entire page and outputting that full
> page as a jpeg.
> It can contain multiple images and most important includes all the borders and
> margins.  So taking this formatted page and putting it into QTRgui which also
> does page formatting is possible but needs careful thought of what's happening.
> In particular LR formatting a 8.5x11 sheet will output an 8.5x11 jpg.
> But reading
> this into QTRgui for printing on 8.5x11 paper is a problem because of
> the margins.
> Typically the largest image is 8.25x10.75 on most Epson printers
> (non-borderless).
> 
> Needless to say there are a lot of considerations here.  I'll try to
> find a workflow
> that accommodates this.
> 
> Thanks,
> Roy
> 
> BTW, there's a little confusion of terminology here.  QTRgui is a
> program only on
> the PC and Print-Tool is Mac only.  I think QTRgui is being mentioned on the Mac
> but I think its really referring to the print dialog page.

> Roy Harrington
> roy@...
> www.harrington.com
>

Re: [QuadtoneRIP] Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2013-01-01 by Roy Harrington

Good, you get the idea.  One temp fix that I thought of was to make the default
ppi = 360 rather than the current 128.   This way I think you could
always out 360dpi
jpegs from LR print module and they would work.

Roy

On Tue, Jan 1, 2013 at 1:30 AM, stephane_bosman <stb@...> wrote:
> Thanks Roy. You are exactly on the problem I have.
>
> In the Lightroom print module, one can choose a custom size for the resulting jpeg. I use a size a bit smaller than the print area on the target paper size and tell QTRGui to print centered.
>
>
> Happy new year to all!
>
>
> --- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>>
>> I've done some looking into this whole jpeg issue.  The whole thing is a bit
>> complicated but I think I understand some of it now.
>>
>> Originally there was a simple jpeg compression file that did not have
>> resolution information -- it just compressed the image data.  Soon after
>> a header called JFIF was added with some more info -- specifically
>> the resolution.  Most older programs used this for a long time.  More recently
>> a more general approach was started -- called EXIF data which most people
>> recognize from camera data.   The file extension .jpg and .jpeg are now used
>> for all these different formats.  So different programs write out
>> different headers
>> -- in fact Lightroom seems to use one for export and a different one for print.
>> (QTR is not the only program affected:  see
>> http://forums.adobe.com/message/2977973
>> if you want to see an unending discussion)
>>
>> QTR on the PC has two distinct parts the QTRgui which is written in a high level
>> language with file reading builtin and a low level part which actually
>> writes to the
>> printer.  So QTRgui understands some more formats than the low level driver.
>> The driver uses open source libraries for reading files and the jpeg
>> library does not
>> look at or understand the EXIF version of the header --only the JFIF version.
>> This is the main cause of the print size problems.  Whether this can be easily
>> resolved is still unknown.
>>
>> Another thing to consider is that in Lightroom the export and print
>> modules have
>> pretty different concepts in mind.  The export is pretty
>> straightforward -- it simply
>> exports just images -- conversions and formats are always one image at a time.
>> The print module on the other hand is a page formatting function.
>> When you print to
>> jpeg file you are formatting an entire page and outputting that full
>> page as a jpeg.
>> It can contain multiple images and most important includes all the borders and
>> margins.  So taking this formatted page and putting it into QTRgui which also
>> does page formatting is possible but needs careful thought of what's happening.
>> In particular LR formatting a 8.5x11 sheet will output an 8.5x11 jpg.
>> But reading
>> this into QTRgui for printing on 8.5x11 paper is a problem because of
>> the margins.
>> Typically the largest image is 8.25x10.75 on most Epson printers
>> (non-borderless).
>>
>> Needless to say there are a lot of considerations here.  I'll try to
>> find a workflow
>> that accommodates this.
>>
>> Thanks,
>> Roy
>>
>> BTW, there's a little confusion of terminology here.  QTRgui is a
>> program only on
>> the PC and Print-Tool is Mac only.  I think QTRgui is being mentioned on the Mac
>> but I think its really referring to the print dialog page.
>
>> Roy Harrington
>> roy@...
>> www.harrington.com
>>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>



-- 
Roy Harrington
roy@...
www.harrington.com

Re: LightRoom 4.3 print module and JPEG dimensions in QTR Gui

2013-01-02 by stephane_bosman

Roy, what you call a temp fix would be all I am asking for. Where do I change the default ppi to 360?

Cheers

--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
Show quoted textHide quoted text
>
> Good, you get the idea.  One temp fix that I thought of was to make the default
> ppi = 360 rather than the current 128.   This way I think you could
> always out 360dpi
> jpegs from LR print module and they would work.
> 
> Roy

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