Archived posting to the Leica Users Group, 2007/02/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Your last paragraph answers your question. If you get a Canon 50/1.2 that left the factory properly shimmed, it's actually not bad wide-open. If you get one that is "off," which, unfortunately, is fairly common, the world at F1.2 will be very soft. I have a "good" one and am very satisfied, even impressed, with the quality of the images at F1.2. My favorite aperture, though, is stopped down a 1/2 stop to F1.6. Things really come together nicely at that aperture. Jim Bielecki >About the softness. There is no question that it is soft wide open. >Objects have a hard core with a halo around them, probably due to >uncorrected spherical aberration. But when the lens is stopped down >beyond f 2.0, the halo disappears and the image becomes quite sharp. >Not as good as an older f 2.0 Summicron, but better than an f 3.5 >Elmar. Except for the weight, I would mount it on the M3 all the time. > >I've heard so many varying opinions about the Canon, some mutually >contradictory, that I'm wondering about variability in lens >manufacturing. Are all Canons alike? > >Larry Z