Hi, > But what are situations where 50/1.2 is absolutely > needed over 50/1.4? If you say "available light", I have hard time > believing that the gain of speed, say 1/50 vs 1/40 makes difference > between a shot taken and a shot missed. Does it, really?
sometimes, yes. The 1 stop shutter speed gain is not 1/50 vs 1/40 it's 1/30 against 1/15 which is the difference between handholdable and not at 50mm for many people. The other big advantage is that with an SLR you get twice as much light in the viewfinder, which makes the scene easier to see and follow, and easier to focus on, whether or not you're shooting wide open. This is probably, in my opinion, the most important advantage of faster lenses. --- Bob mailto:[EMAIL PROTECTED] Thursday, May 02, 2002, 9:24:13 PM, you wrote: > I guess, what I would care to know is what are the situations when 1 or > less extra stop makes critical difference. > I can understand fast tele: when you stick 2X converter on 300/2.8, 1 > stop initial difference would translate into 2 stops, and I do think > that's quite a bit. But what are situations where 50/1.2 is absolutely > needed over 50/1.4? If you say "available light", I have hard time > believing that the gain of speed, say 1/50 vs 1/40 makes difference > between a shot taken and a shot missed. Does it, really? > Tom, you said, you'd pay 3 times more for a 75mm normal lens, but you > didn't say why. > I don't intend to step on anyone's toes, just trying to figure out what > I am missing. > Best, > Mike - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
