Ok, so I'm looking at SLR choices for a cropped sensor SLR. I own no SLR let alone any lenses.
I sense that a 180 degree fisheye lens is a very desirable lens to have. Clearly a lot of other photographers do too.
This may be obvious, but does this rule out Canon as a brand as they do not have such a lens and there is no hint of them launching such a lens?
If a lens such as the 10.5 Nikkor or the 8mm Olympus is a must have item should I not bother to look at Canon cameras unless I like the look of the 5D?

