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johnnyrod · 30-05-16, 08:46 PM

So many posts! I miss some of them. Re. 135mm f2.8, a fast shutter speed is good with along lens because of the magnification factor, plus you might well be shooting something moving hence the need for telephoto e.g. sports, wildlife - also need as fast a shutter speed as you can get away with. Even if it's only one stop faster than another lens it can add up - 1 stop faster lens, maybe use 800 ISO instead of 400 so another stop, push your luck a bit, another stop, and that's three stops more than just pulling out whatever you have and shooting with it. Okay two of those don't depend on the lens but it all helps. Tough focusing wide open though, very little DoF because of the longer focal length.

30-05-16, 08:46 PM	#979
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,122	Re: Vintage film cameras So many posts! I miss some of them. Re. 135mm f2.8, a fast shutter speed is good with along lens because of the magnification factor, plus you might well be shooting something moving hence the need for telephoto e.g. sports, wildlife - also need as fast a shutter speed as you can get away with. Even if it's only one stop faster than another lens it can add up - 1 stop faster lens, maybe use 800 ISO instead of 400 so another stop, push your luck a bit, another stop, and that's three stops more than just pulling out whatever you have and shooting with it. Okay two of those don't depend on the lens but it all helps. Tough focusing wide open though, very little DoF because of the longer focal length.