Oh, I though you werer going to make you own prints.
Bill pearce
----- Original Message -----
From: "Chris Crawford" <chris@xxxxxxxxxxxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, December 01, 2009 2:21 PM
Subject: Re: [OM] How do I use chemical process print paper profiles in
PhotoShop?
> Chuck, glad I could help. I got expert in this stuff, color management,
> years ago when I first began using my film scanner and an epson printer.
> It
> was a nightmare because back then little reliable info was out there and
> it
> was all very obscure and hard to understand. Things are easier now, there
> are some good books out there that explain this stuff in plain english,
> but
> I still think color management is the hardest thing about digital mage
> processing. There are so many variables. Is he monitor calibrated right?
> Is
> the monitor even capable of proper display? Most LCDs are almost worthless
> in my experience if you want exact or near-exact matching from screen to
> print. Most are too bright and to make matters worse, most Calibration
> systems have you use way too bright of a white point when they calibrate
> your screen (should be 80cd/sq inch). My Eye-One Display said to calibrate
> LCDs to 120 cd/sq in, and that is WAYYYYY to bright. I now have a
> self-calibrating NEC screen that automatically sets itself to 80 for
> brightness and D65 for color temp. Works perfect, but expensive. The old
> CRT
> screens were better, even cheap ones worked well. With LCDs the cheap ones
> often are not capable of the accuracy of color needed and are too bright
> even at the dimmest settings :(
>
> Yep, you had it right. The choice between Perceptual and Relative
> Colrimetric is called the RENDERING INTENT> What it does is it controls
> the
> manner in which colors are converted from your editing colorspace (sRGB)
> and
> your output colorspace (the printer profile). Like I said some profiles
> seem
> to be optimized for Perceptual, some for Relative Colorimetric. Perceptual
> is most common. You can't trust the instructions that come with the
> profile
> (if it came with any). I have gotten profiles from labs before with
> instructions to use one of the rendering intents, only to find that the
> opposite choice gave the best results! That's why I say to try them both.
>
> Oh, I forgot....when you do the conversion, there is a checkbox that says
> "Use black point compensation". Make sure its checked.
>
>
>
> --
> Chris Crawford
> Fine Art Photography
> Fort Wayne, Indiana
> 260-424-0897
>
> http://www.chriscrawfordphoto.com My portfolio
>
> http://blog.chriscrawfordphoto.com My latest work!
>
>
> On 12/1/09 2:56 PM, "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>
>> Thanks. I guess I had it sort of half figured out when I said:
>> "Or do I need to generate an output file that is filtered through the
>> paper profile in a manner similar to generating the output data that
>> goes to my inkjet printer?" I just didn't know how to do it. Now I do.
>> Thanks again. And I'll take your advice on having the same test print
>> done multiple ways.
>>
>> Chuck Norcutt
>>
>> Chris Crawford wrote:
>>> Chick,
>>>
>>> Soft proofing doesn't really work well with RGB profiles, is it more
>>> effective with CMYK press profiles because those presses lose a lot more
>>> color range compared to what the monitor shows. When preparing files for
>>> an
>>> RGB printer like a Fuji Frontier or other digital minilab, or for an
>>> inkjet
>>> printer (injets are designed for RGB input despite using cmyk inks).
>>>
>>> Here's what you do: Make the image look the way you want in sRGB, then
>>> convert to the printer profile you have using the 'convert to profile'
>>> command. You'l probably want to do this using Perceptual rendering. Many
>>> RGB
>>> output profiles give bad results using Relative Colorimetric. An easy
>>> test
>>> is to take a file and convert it both ways and send both files to the
>>> lab
>>> and see which looks closer to your screen. But I am betting on
>>> Perceptual.
>>>
>>> Save the converted file under a new name so you don't lose the original
>>> sRGB
>>> version. When you save, DO NOT embed the profile....Fuji Frontiers don't
>>> like to see an embedded profile. Then, send the converted file to the
>>> printer. Your print should be pretty close if your screen is calibrated
>>> right.
>>>
>>>
>
>
> --
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