I've found this to be a common thing in a lot of product photography... this light reflection of the object in the floor. Is it really a semi-reflective surface that they're shooting on, or is it done in post processing? I've added a couple pics to illustrate what I mean... the pennies one is a little harder to see, but you get the point. Either way, could somehow tell me or point me in the direction of how to accomplish this? Thanks!