I haven\'t been able to get the f/4 and f/5.6 numbers done on the 25mm yet (I got handed a sudden project to test at 50mm today - but you\'ll like hearing about that one).
It did occur to me, though, that I could at least go out and use our \"infinity target\": a ridge about 40 meters away with a treeline about 100 meters behind that. Not very scenic, but maybe helpful. I took shots with the 25 at f2; 2.8; 4; 5.6 and 8 and for comparison the 21mm (same shooting spot so slightly different framing) at 2.8;4;5.6 and 8. I think posting downsized jpgs is useless for any detail comparison so I\'ve posted the at 100% here: http://www.pbase.com/rcicala/zf25mmf20&page=all
Feel free to downloFad if you find them useful. At a quick glance, and after playing with the lenses around the shop today I agree with the previous comments are correct: the 25mm seems tuned for closer work and doesn\'t do quite as well at distance, although it\'s still quite good in my mind. I\'m guessing perhaps that Zeiss is already thinking the cinema folks are going to love the cp.2 version -- and cinema folks don\'t shoot at infinity much.
Dec 30, 2011 at 02:50 PM
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