Yahoo Groups archive

QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Thread

JPEGs don't scale properly

JPEGs don't scale properly

2010-04-06 by horstenj

I'm very happy that QTR now support JPEGs. For windows users, that gives finally the possibility to "print" directly from programs like Lightroom using the QTR Monitor Folder option.

However, with my first experiments I ran directly into the issue that JPEGs (at least mine exported from Lightroom) do not scale properly. The preview in QTR Gui is fine but the actual print is much (~factor 3)larger. 

Any clues?

Joost

Re: [QuadtoneRIP] JPEGs don't scale properly

2010-04-06 by Roy Harrington

Hi Joost,

I've looked into it.  Apparently most color jpgs use a YCbCr color model.
The grayscale jpgs work ok but I've got to figure out how best to handle
this.

Always something new.

Roy

On Tue, Apr 6, 2010 at 11:57 AM, horstenj <j.h.j.h@...> wrote:

> I'm very happy that QTR now support JPEGs. For windows users, that gives
> finally the possibility to "print" directly from programs like Lightroom
> using the QTR Monitor Folder option.
>
> However, with my first experiments I ran directly into the issue that JPEGs
> (at least mine exported from Lightroom) do not scale properly. The preview
> in QTR Gui is fine but the actual print is much (~factor 3)larger.
>
> Any clues?
>
> Joost
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>


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

Re: JPEGs don't scale properly

2010-04-07 by horstenj

Thanks for quick response, Roy. I checked, I have installed the QTR gray lab icc-profile but it doesn't even so show up in Lightroom (the QTR rgb lab profile does). So my understanding is that Lightroom can create color jpeg only.

I hope you can fix the issue.

Joost  

--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
Show quoted textHide quoted text
>
> Hi Joost,
> 
> I've looked into it.  Apparently most color jpgs use a YCbCr color model.
> The grayscale jpgs work ok but I've got to figure out how best to handle
> this.
> 
> Always something new.
> 
> Roy
> 
>

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.