What is art? In my humble opinion art is anything that you like to look at. Having said that, as a painter, or sculpter or photographer if you see something someone else has done, is it ok to repeat it, as long as you don't try to claim it as your own original artwork? For instance, in this months issue of Rangefinder magazine, there's an image of Barack Obama similar to the one you see here. I (nor the other photographer) invented back lighting, the camera, or portrait photography. So if I like the effect, and reproduce it using my son as a model, did I plagerise the technique, or because the other photographer actually invented nothing new, is it all right? I guess it's subjective.