Mamiya

The lighting is pretty good on this one. I would have just used some additional fill lighting to attenuate the shadows next to the cheekbone and neck area (more of a personal preference).

If the subject of the picture is the camera, why not have that displayed more prominently, rather than hiding in his jacket's shadow?

My only other comment would be to fix the blemishes on the model's face, and maybe not have him cover the belt buckle with his hand. It seems to draw a lot of attention to that general area.

Overall, It's a decent shot, but I like some of the other portraits better.