Okay, I'll play. I am the newly appointed photographer for the St. Louis American Orchid Society Judging Center.
Since we are all volunteers, we are limited to what we can afford and our abilities. The parameters are not really artistic rather to get the photos as close as possible in focus and in good color.
With that being said, I have problems with the larger plants. I think it is my lens size and lighting. I just upgraded to a much better camera (Nikon D5200), but I might still need a different lens. Maybe a better wide-angle?
Here is one with the old camera. Sony A100 taken inside a vestibule with a white diffuser panel underneath. It was late afternoon. I do these on auto focus, because I don't trust my near-sighted eyes anymore. ISO800 26mm f22 1/4 on a Bogen heavy tripod. I took the RAW and photoshopped the lint off of the background.