This is one of the smaller 8x10 sample cuttings, done as a test. The gradient change over the body is relatively simple. I'd normally react to this by adding additional layers to increase the detail. But the folds of the singlet around his knees are exceptionally complicated, more layers would make them even more so.
I'm not sure this test is successful.
This image has been cropped down from a larger shot. I do not know the original photographer.