Mishka, Many times the stop extra is more for viewfinder usage - focusing, composing, etc. Try shooting a wedding in dim light on moving targets trying to keep them in focus when you can see well enough. Or try focusing an f4 wide angle on a nearby group in dim light. It's hard to focus when things are bright. So more speed there would help even though the shot may be taken at F8 or 11. That's when the speed is really worth it.
Bruce Thursday, May 02, 2002, 1:24:13 PM, you wrote: M> I guess, what I would care to know is what are the situations when 1 or M> less extra stop makes critical difference. M> I can understand fast tele: when you stick 2X converter on 300/2.8, 1 M> stop initial difference would translate into 2 stops, and I do think M> that's quite a bit. But what are situations where 50/1.2 is absolutely M> needed over 50/1.4? If you say "available light", I have hard time M> believing that the gain of speed, say 1/50 vs 1/40 makes difference M> between a shot taken and a shot missed. Does it, really? M> Tom, you said, you'd pay 3 times more for a 75mm normal lens, but you M> didn't say why. M> I don't intend to step on anyone's toes, just trying to figure out what M> I am missing. M> Best, M> Mike >> From: tom >> Subject: RE: how much 1 stop worth? >> Date: Thu, 02 May 2002 10:56:32 -0700 >> >> Depends on the lens. I would pay $1500 for a FA 645 75/2, which is 3 >> times the 75/2.8 price. I'd be willing to pay a bit more for a 55/2. >> >> So, in my case, 300% if I felt I needed it. >> >> tv M> Yahoo! Health - your guide to health and wellness M> http://health.yahoo.com M> - M> This message is from the Pentax-Discuss Mail List. To unsubscribe, M> go to http://www.pdml.net and follow the directions. Don't forget to M> visit the Pentax Users' Gallery at http://pug.komkon.org . - 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 .
