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Old 06-19-2012, 10:26 PM
 
3,614 posts, read 3,503,313 times
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I had a client bring in a computer, and was complaining that his computer was making his photos lose quality (?!) when converting from RAW to JPG. Further inspection yielded that JPGs appeared slightly (ever so) less sharp and lost a little color--they appeared somewhat flat.

I know JPGs are a lossy format, but I'm not sure as to what extent the loss would occur. The client is using a Canon 50D to shoot in RAW format (Windows reads them as CR2), and is using Digital Photography Professional 3.08 to convert them from RAW to JPG.

All the research I've done point to two things that I know of--the way DPP renders photos, and the real loss of bits from 14 in RAW to 8 in jpg. But, alas, this client swears it's the computers fault.

Any ideas what's going on?
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Old 06-20-2012, 01:20 AM
 
Location: North Carolina
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They lose color and appear flat? Sounds like a color profile issue. What is he using?
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Old 06-20-2012, 02:29 AM
 
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yep i agree , the raw is either adobe or pro-rgb ill bet and they are opening as srgb. here is a test to see if your being color managed

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Old 06-20-2012, 08:35 AM
 
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Quote:
Originally Posted by mathjak107 View Post
yep i agree , the raw is either adobe or pro-rgb ill bet and they are opening as srgb. here is a test to see if your being color managed
Do the raw images have color-space profiles? Anyway, the software is indeed set to sRGB to JPG conversion. It seems like every suggestion states to set it as such.
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Old 06-20-2012, 08:56 AM
 
Location: Dallas, TX
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Color-space = sRGB shouldn't be a problem. The question I have is, how is the person comparing RAW to JPG? Is a print involved, or just what shows up on the monitor (or worse, a comparison being made from camera's LCD for RAW to monitor/print for JPEG)? Or, are both being compared on the monitor?
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Old 06-20-2012, 10:14 AM
 
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The comparison is being made on a monitor. HP L1910 in my case.
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Old 06-20-2012, 10:33 AM
 
Location: Dallas, TX
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I am assuming that only a direct RAW to JPEG conversion is involved. Would it be possible to share a pair of test files (a RAW and its converted JPEG) via something like DropBox?
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Old 06-20-2012, 07:24 PM
 
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Quote:
Originally Posted by EinsteinsGhost View Post
I am assuming that only a direct RAW to JPEG conversion is involved. Would it be possible to share a pair of test files (a RAW and its converted JPEG) via something like DropBox?
The photos are all family photos, but I can see if the client is willing to share a few for testing\diagnostics.
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Old 06-21-2012, 07:31 AM
 
Location: Dallas, TX
31,767 posts, read 28,822,592 times
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Quote:
Originally Posted by Konraden View Post
The photos are all family photos, but I can see if the client is willing to share a few for testing\diagnostics.
May be he/she can just take test shots to explain the problem, instead of sharing those particular images. That will certainly help.
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