What determines the value of something? What is the value of this rose? Is it worth more than the image above? What about a better image, or perhaps a lesser one? And what will its relative value be in a few weeks when it withers away?
I was quite happy with this one at the moment I snapped it, but to my disappointment I discovered that there is as much noise in the image as there is sky. Taken at ISO 400, 1/400sec, F7.1.