Barry_Green
Moderator
A 25mm is always a 25mm. I have lots of 25mm lenses, they're all 25mm, whether I put them on my 1/4" camera with a DOF adapter or on my 7D or my GH1 or anything inbetween.There's something to be said about buying a 25mm and knowing its a 25mm.
Yes, the field of view changes, but the lens is always 25mm.
Yes, that there is.There's something nice about going really friggin wide as well.