Artifact Problem?
Hi guys I am new and have had some photos accepted but others that I was sure should get in were rejected for artifact problems. Below are 3 low res version of the images and I would love some suggestions as to what the issue with the images might be and if they could be fixable. If it helps I am happy to post the camera details in an update to the post. Sure all 3 may not be the most interesting of images but I still can see potential uses for all of them.
All I can think of that could be the issue is that it has a relatively short depth of field so the main leaf is not all sharp and maybe they think I have applied a vinette.
I got no idea at all of the issues.

This one is slightly noisy in some areas but not in my opinion to a level that should put anyone off. It was taken with my phone but in raw and lightly processed to increase the saturation a little and straighten it as it was very slightly off. The only other thing I just noticed is the 2 white panels but I could not do anything about them beyond generating my own textures to fill but I would assume if that was an issue the customer could just as easily do the same.
