10-10-2018 01:27 PM - edited 10-10-2018 01:32 PM
Hi.. This is recent. I work in RAW export to TIFF, open them in photoshop CS5 and finish them as jpegs. Up until last month (September 2018) when I opened any directory with CR2, TIFF and jpgs in DPP 4. 8. 30 ALL the files had usable thumbnails. I can still open jpegs I made in August 2018 in DPP but not newer ones. I have not changed anything.
Now, the jpegs display as small thumbnails with a ? and "Unsupported Image" and will not display in preview or open to edit in DPP..
Can anyone explain this bug to me?
Solved! Go to Solution.
10-12-2018 04:27 PM
Solved! Someone on the retouching forum at DPR looked at my jpegs and noticed that the bad ones used progressive.. The good ones didn't... So, I resaved as baseline optimized and no problems. I wonder how that switch happened!
10-10-2018 05:32 PM
If the JPEGs were created in DPP, then you apparently have a legitimate complaint about a bug in DPP. But as I read your workflow, those JPEGs would seem to have been created by Photoshop. If that's the case, your beef is probably with Adobe, not with Canon.
10-10-2018 08:19 PM
Thanks Bob. I hear you.. But the thing is that all the jpegs made this way since May 2018 open in DPP ... except for the last month!! Maybe it's a Windows 7 update thing. When is DPP 5 due out?
10-12-2018 04:27 PM
Solved! Someone on the retouching forum at DPR looked at my jpegs and noticed that the bad ones used progressive.. The good ones didn't... So, I resaved as baseline optimized and no problems. I wonder how that switch happened!
10-12-2018 05:48 PM
@cdmazoff wrote:Solved! Someone on the retouching forum at DPR looked at my jpegs and noticed that the bad ones used progressive.. The good ones didn't... So, I resaved as baseline optimized and no problems. I wonder how that switch happened!
Do the "progressive" image files violate the JPEG standard? If so, then Adobe has a problem. If not, then Canon has a problem. Or so it would seem.
If the question has no definitive answer, then is the problem a lack of precision in the JPEG standard?
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