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Once again, and this isn't the first time nor will it probably be the last time, the attached image was rejected for "Grain/Noise Problem". The only way I can see any "grain" is if I magnify the image to over 300%. Then I start seeing the individual pixels which is not grain. The image was shot with a Nikon D7500 using an 80-140mm zoom set to 50mm. ISO was 200; shutter 1/60 and f stop at f18. Other images shot at the same settings and in the same session were accepted without issue. Someone please explain this to me. I don't have this issue with images at Shutterstock or iStock.
(Original image size was 2479x3469 and did not have the watermark.)
Maybe because of this:
Enlarged to 185% You can see some signs of noise. Adobe tends to be picky.
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Maybe because of this:
Enlarged to 185% You can see some signs of noise. Adobe tends to be picky.
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All the shadows have some noise both in luminance and colour.
Additionally, I would expect the picture to be crisp sharp. But it is not. Sharpening helps...but introduces more noise. An aperture of 18 does probably not help.
And not to le a to bad impression: A great subject and a nice framing, great colours.
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Why would using a small aperture such as f18 introduce "noise" or an "artifact" problem?
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Unfortunately, I misstated the reason for the rejection: The image was rejected due to 'Artifacts'.
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The noise includes artifacts, so my above reason is still relevant. Using a small aperture dosen't increase noise, but exposure of the image including ISO does. (The higher the ISO, the more noticeable the noise gets.)
Noise includes both colour and luminance.