We really like this concept #25. We would prefer if the red was not there and the background showed through in the center of the P. We also might like it if the "lens" was shaped a little more like a typical SLR lens that is slightly narrower at the base than at the front like the one below.
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&fcategoryid=149&modelid=11924We like that the color is all the same in #33 but not the little light coming out the end.