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| p.8 #8 · The Contax 100-300 Vario-Sonnar |
Precise infinity stop is a finicky thing. Zeiss decision to push the infinity focus decision to the user is a clear sign of it. Itīs apparently impossible to fix the inf position on some lenses, the long VS being one of them. On my bodies I allways use live view focusing if I want to nail the focus placement. But this is the case with almost all my adapted lenses, nothing that I have noted especially with the long VS. But I have to admit that I find the accurate inf stop a pleasure to use with the 21ZE. Otoh the DOF of a wide angle lens is substantial compaired to a tele lens.
I would perhaps use the word characteristic in stead of issue in this case, and with all lenses where focusing by design go beyond infinity. If I get characteristics as very sharp and very low chromatic aberrations but loosing inf focus stop, itīs a net gain, at least for me. As this lens is "pixel sharp", it also allows one to note any imprecisions in focusing within the capabilities of the whole package.