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07/12/2004 05:51:46 PM · #1 |
Well, I thought if you manipulated a picture then you lost all the exif data? I was just uploaded a reasonably heavily edited pic to a coppermine gallery and it still pulled the following exif data from the image ...
Camera: Canon - Canon EOS 300D DIGITAL
Date taken: 2004:07:05 17:05:18
Aperture: f/ 8.0
Exposure time: 0.003 s (1/320)
Focal length: 70.00 (70/1)
I thought all exif data was lost when an image was edited? I guess I live and learn.
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07/12/2004 05:53:01 PM · #2 |
Different programs handle EXIF data differently when editing. Those that do not recognize the standard strip it out, those that do recognize the standard adjust the EXIF to indicate the image was edited.
-Terry
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07/12/2004 06:09:07 PM · #3 |
Thanks for that Terry, with all the talk about dates in here and dq's (even after a ribbon has been won)I'd have thought dpc would be able to not allow submission to a challenge if the pic was not taken within the challenge dates?
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07/12/2004 06:22:43 PM · #4 |
Originally posted by Ecce Signum:
Thanks for that Terry, with all the talk about dates in here and dq's (even after a ribbon has been won)I'd have thought dpc would be able to not allow submission to a challenge if the pic was not taken within the challenge dates? |
They certainly don't allow it, you are correct. It's important to save a copy of the original file right from the camera before doing any editing. You won't be allowed to submit a photo that was edited in any way, even with some EXIF data still in tact, for the very reason you point out...the date will be altered, and therefore won't be solid evidence of the date of exposure. |
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07/12/2004 06:39:47 PM · #5 |
Originally posted by wkoffel:
Originally posted by Ecce Signum:
Thanks for that Terry, with all the talk about dates in here and dq's (even after a ribbon has been won)I'd have thought dpc would be able to not allow submission to a challenge if the pic was not taken within the challenge dates? |
They certainly don't allow it, you are correct. It's important to save a copy of the original file right from the camera before doing any editing. You won't be allowed to submit a photo that was edited in any way, even with some EXIF data still in tact, for the very reason you point out...the date will be altered, and therefore won't be solid evidence of the date of exposure. |
The picture I submitted was taken on the 5th July and edited tonight, the exif date did not change (still the 5th) my question now is can't dpc read this (as they do image size) and refuse the image at submission time rather than after the challenge?
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07/12/2004 08:24:25 PM · #6 |
Ah, I see what you are saying! Sorry, I was slow on the uptake there. I think that's an interesting idea. Warning someone if the EXIF date tag falls outside the submission dates. Don't stop them, because who knows what date issues are going on. There are lots of possibilities where the shot is legal, even if the final output JPG doesn't reflect that.
But it might save people some grief if they were made aware up front that the date on their camera might be incorrect, or something.
Originally posted by Ecce Signum:
The picture I submitted was taken on the 5th July and edited tonight, the exif date did not change (still the 5th) my question now is can't dpc read this (as they do image size) and refuse the image at submission time rather than after the challenge? |
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07/12/2004 08:25:48 PM · #7 |
I always use the "Save for the web" command, which does lose the exif data. So having dpc's computer checking dates would only work in some cases.
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