Digital BW, The Print

Hi all,

does anyone can tell me Epson 9800 native resolution for each quality  
settings.

And how the printer handle images made at other resolution.

I also wanna know if is better to use the native resolution to make  
critical unsharp adjustments in Photoshop.

I hope you can understand my english ;-)

thank's

Antonio


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

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Antonio Garcia
<garcia.antonio@...> wrote:

Antonio,

The following, according to Jeff Schewe, contributor/consultant to
Adobe and publisher of Lightroom News, Photoshop News. He is also the
co-author with the late Bruce Fraser of Real World Camera Raw. 

I'm quoting from the DVD "From Camera To Print - Fine Art Printing
Tutorial" available at LL.

- The native resolution of the Epson Printer is about 360. He didnt
talk about different quality settings.

- He says that if the resolution of the native file is between
180-480PPI, just send the native pixel to the printer, properly
sharpened. The whole key to this is that is has to be properly
sharpened. With the Epson printer, you don't need to be upsampling of
up-rezzing, let the printer handle it.

- Apparently, HP has the same guidelines for their Z3100 printers.

In the early days of Conetech Piezography, circa 2000, the word from
the support person (forgot his name, no not Jon Cone) was to let the
PPI fall where it may when sizing a print and send the file to the
printer as is.

HTH,
Andre

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Andre Moreau" 
<andre1moreau@...> wrote:
>
> 
> In the early days of Conetech Piezography, circa 2000, the word from
> the support person (forgot his name, no not Jon Cone) was to let the
> PPI fall where it may when sizing a print and send the file to the
> printer as is.
> 
> HTH,
> Andre
>


For photos that is probably good advice, but if you have text then 
you will want some multiple of 360ppi for an Epson printer, and I 
think 300ppi for a Canon or HP printer (Canon and HP may have changed 
since I last looked into this, so verify before taking as gospel).

Now as far as the printer resoltuion for the different quality 
settings in the driver, it's hard to tell. But best photo will 
probably be the highest (2880???) and photo probably 1440, and so on 
down the line until you get to draft which is probably 180dpi. I 
don't think the 9800 gets into the optimized 5760dpi setting that 
some of the desktop printers will claim.

Also notice that I switched between PPI (pixels per inch) from the 
paragraph about the image to DPI (dots per inch) when talking about 
what the printer can put on the paper. I didn't want anyone to think 
I had made a mistake or that the two different expressions can be 
used interchangably.

Andre Moreau wrote:
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Antonio Garcia
> <garcia.antonio@...> wrote:
> 
> Antonio,
> 
> The following, according to Jeff Schewe, contributor/consultant to
> Adobe and publisher of Lightroom News, Photoshop News. He is also the
> co-author with the late Bruce Fraser of Real World Camera Raw. 
> 
> I'm quoting from the DVD "From Camera To Print - Fine Art Printing
> Tutorial" available at LL.
> 
> - The native resolution of the Epson Printer is about 360. He didnt
> talk about different quality settings.
> 
> - He says that if the resolution of the native file is between
> 180-480PPI, just send the native pixel to the printer, properly
> sharpened. The whole key to this is that is has to be properly
> sharpened. With the Epson printer, you don't need to be upsampling of
> up-rezzing, let the printer handle it.
> 
> - Apparently, HP has the same guidelines for their Z3100 printers.
> 
> In the early days of Conetech Piezography, circa 2000, the word from
> the support person (forgot his name, no not Jon Cone) was to let the
> PPI fall where it may when sizing a print and send the file to the
> printer as is.
> 
> HTH,
> Andre 


There are good reasons to put some of Mike Chaney's facts 
next to the simplicity of the above message:

http://www.steves-digicams.com/techcorner/january_2006.html

and more of his contributions on the pages there and on the 
ddisoftware site.

Not so long ago I tested the downsampling of the HP Z3100 
driver and the downsampling of Qimage with its 
anti-aliasing, in the last case feeding the Z3100 driver 
with the native resolution. That tells a lot about what can 
be improved on extrapolation in drivers. There has been 
improvement but not on all aspects.

-- 
Met vriendelijke groeten, Ernst


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