Originally posted by jolee1990 hmm i understand the smaller the number the bigger the aperature?
Yes.
Quote: and i havent seen 1:1
nor will you. They don't exist for Pentax, and for all practical purposes, they are not used for other brands either (even though they *have* been made). f/1.2 is the largest aperture that you can buy, but very few people even use that. f/1.4 is, as I said before, the largest aperture lens most people ever see in their lives.
Cincinatti might not have many camera stores, but it has pawn shops. And practically every pawn shop has a 50/1.7 at least. Many people prefer the 50/1.7's over the 50/1.4's. Unless you're already an expert on such matters and have a very specific reason to be interested in f/1.2, I'd put that out of your mind and concentrate on finding a 50/1.4 or 50/1.7 to try. Note the 50/1.2's are all manual focus, as are most of the 50/1.4's and 50/1.7's you'd find in a pawn shop.