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DPChallenge Forums >> Challenge Announcements >> "Improper White Balance II" results recalculated
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Showing posts 1 - 6 of 6, (reverse)
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07/30/2019 11:33:37 PM · #1
The former blue-ribbon image in the "Improper White Balance II" challenge has been disqualified because the photographer was unable to provide a valid JPG original in a timely manner :-( Congrats to our new ribboner and HM.
07/31/2019 05:19:53 AM · #2
Wow. i'm totally embarrassed! I did not know there was a difference in the images between RAW files and JPG right from the card. I frankly never use RAW files from my 5D mark IV but used my 6D to take this shot which is set for RAW. When I downloaded the image from the camera I must have downloaded the RAW image instead of the JPG image not realizing they were different visually. In fact, I did not see the difference until I saw the DQ and pulled them up on my computer. Here they are:

RAW Image: ' . substr('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239315.jpg', strrpos('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239315.jpg', '/') + 1) . '
JPG Image: ' . substr('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239314.jpg', strrpos('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239314.jpg', '/') + 1) . '

Now I see the difference:(
I had sent the JPG image for verification prior to the end of the challenge for verification because I went away. Again, I did not know there was a difference between the JPEG and RAW images straight from the card. Then I got a 2nd request for verification after the challenge was over. I thought there had been a problem with the first time I did it so this time I sent the RAW image from the card.

Sorry for my stupidity. I never would have known this if it wasn't a minimal editing challenge. Learned something new!
07/31/2019 09:46:35 AM · #3
I didn;t know that either, so in here the difference was the brightness? I see RAW has a bit of extra compare to the JPG.

Originally posted by GolferDDS:

Wow. i'm totally embarrassed! I did not know there was a difference in the images between RAW files and JPG right from the card. I frankly never use RAW files from my 5D mark IV but used my 6D to take this shot which is set for RAW. When I downloaded the image from the camera I must have downloaded the RAW image instead of the JPG image not realizing they were different visually. In fact, I did not see the difference until I saw the DQ and pulled them up on my computer. Here they are:

RAW Image: ' . substr('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239315.jpg', strrpos('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239315.jpg', '/') + 1) . '
JPG Image: ' . substr('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239314.jpg', strrpos('//images.dpchallenge.com/images_portfolio/0-4999/3306/120/Copyrighted_Image_Reuse_Prohibited_1239314.jpg', '/') + 1) . '

Now I see the difference:(
I had sent the JPG image for verification prior to the end of the challenge for verification because I went away. Again, I did not know there was a difference between the JPEG and RAW images straight from the card. Then I got a 2nd request for verification after the challenge was over. I thought there had been a problem with the first time I did it so this time I sent the RAW image from the card.

Sorry for my stupidity. I never would have known this if it wasn't a minimal editing challenge. Learned something new!
07/31/2019 01:35:15 PM · #4
The noticeable difference is in the brightness (and maybe a bit of the consequent sharpness), but the rules violation is that the submission must derive from a JPEG as captured by the camera, not converted from a RAW file, even if the conversion settings are virtually identical to those pre-set in the camera.

We encourage using RAW+JPEG when shooting for Minimal challenges; use the JPEG for the entry, but have the RAW available for later processing for prints or posting if desired.
07/31/2019 03:01:21 PM · #5
The JPEG is a single interpretation of the RAW file. The RAW file doesn't really have a "look", it's light information that then has a profile applied to it in the RAW editor. If you're using an editor coupled to the camera brand then it's possible that the editor will choose the one applied to the JPEG and JPEG Preview, but if you're using Lightroom/ACR then by default they apply the "Adobe Standard" profile. For most cameras you'll also be able to access a set of profiles that match your camera so if you were using the standard 6D profile then applying that one (or whatever matches the profile applied in-camera) to the RAW image instead of the Adobe Standard one would likely give you an image that was closer to the JPEG.

Still, as was said, that wouldn't save you the DQ. :(
07/31/2019 04:06:01 PM · #6
Ohhhhh.... dang!
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