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| p.7 #3 · Planar vs. Sonnar vs. Planar |
Um, isn't this a lens you buy because you fancy the look wide open which is pretty much the only reason to get the Sonnar over let say, anything else, that will look better stopped down?
Of course, but the Sonnar is also quite sharp stopped down. If you want it as a WO speciality lens, then I think the focus should be optimized for WO. But if you want it to be more versatile, I think, and Zeiss seems to agree here, that it should be optimized for f/2.8.