Your Most Recent Thoughts on Wide Primes.

the best thing about the 12mm is its snap focus ability, which allows you to move very quickly between auto and manual focus. this feature makes it a superb street shooting lens. take a look at ray sachs' street photos and his discussions of the 12mm snap focus/zone shooting. here's one thread but there are others out there as well: http://forums.dpreview.com/forums/read.asp?forum=1041&message=42129915