Capture One vs Canon DPP JPEG colours
I always shoot RAW, process the images and archive both the orignal RAW and finished TIFF files. Then, to produce images for my web site I convert the files to small JPEGs and watermark them.
My preferred RAW converter is Phase One's Capture One but I've noticed some strange behaviour with images from the 450D and 500D that have been converted from RAW using Capture One.
Regardless of the program that I use to perform the JPEG conversion (generally Photoshop or Irfanview) the resultant JPEGs have very low colour saturation compared to the TIFF they were converted from. This does not happen if the RAW files were processed using Canon's DPP, nor does it happen with 10D, 20D or 40D files.
Interestingly, it also happens, though to a lesser extent, if I use Capture One to convert the TIFF files to JPEGs. However, I prefer not to do this as it means frequent resetting of C1's output settings.
I really don't like using DPP and would far rather use Capture One, but this is causing a farily big bulge in my workflow. I'd appreciate it if anyone else can report seeing this effect and has any ideas on what causes it. I may have just overlooked a basic setting on C1.
I'll also post this message on the DP Review 500D forum.
Thanks.
My preferred RAW converter is Phase One's Capture One but I've noticed some strange behaviour with images from the 450D and 500D that have been converted from RAW using Capture One.
Regardless of the program that I use to perform the JPEG conversion (generally Photoshop or Irfanview) the resultant JPEGs have very low colour saturation compared to the TIFF they were converted from. This does not happen if the RAW files were processed using Canon's DPP, nor does it happen with 10D, 20D or 40D files.
Interestingly, it also happens, though to a lesser extent, if I use Capture One to convert the TIFF files to JPEGs. However, I prefer not to do this as it means frequent resetting of C1's output settings.
I really don't like using DPP and would far rather use Capture One, but this is causing a farily big bulge in my workflow. I'd appreciate it if anyone else can report seeing this effect and has any ideas on what causes it. I may have just overlooked a basic setting on C1.
I'll also post this message on the DP Review 500D forum.
Thanks.
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Key here are your color management or color space settings during the process. Can you elaborate on that?
So, what color space do you use when process to TIFF; does that change when converting to JPEG; in which program appears the JPEG to be less saturated?0 -
I think I've solved the problem, and you're right Paul, it does come down to colour management. I was under the impression that I was using Adobe RGB all the way through from the camera to the processed TIFF and that I was then converting to sRGB for the web display JPEGs.
However, a couple of things appear to have conspired against this being so. The first was that Canon DPP appears to use sRGB even when Adobe RGB is selected as the preferred option. Hence the reason JPEGs produced from that program's TIFF files always seemed to match the TIFF image pretty well. They should have; they were using the same colour space. A quick look at the file info from TIFF images processed with DPP set to Adobe RGB clearly shows the resultant images are sRGB.
Alright, that's not what I wanted, but it doesn't explain why the C1 TIFFs were producing such washed out JPEGs. After a day of checking my settings I think I have the reason for that. It is possible to set the ICC profile in the tools display to different setting than the proof profile in the "View" menu settings. That's what I'd done. The proof profile was set to sRGB while the ICC profile was set to Adobe RGB. This resulted in many colours appearing overexposed or out of gamut. Adjusting the image to get them back within range meant that when the TIFF was converted to a JPEG it became very desaturated. Setting both the profiles to Adobe RGB gave me TIFFs that produced the JPEGs I was expecting.0
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