This fish eye look that you talk about, do you really mean Barrel distortion?
Also you said any lens not fish eye is rectilineal, this proves you are retarded because I have a non-rectilineal 85mm prime lens.
OF COURSE YOU DO YA MORON!!!
There is NO REASON for a lens above 35mm to be rectilinear!! They don't even make them past 15mm dumbass!!
YOU ARE RETARDED!!!