I second that, the CZJ 80/1.8 is superb lens. It's similar design
(maybe even same?) to Pentax K 85/1.8 (I have to dig out my 80/1.8 CZJ
diagram), but in that case, the CZJ is original while Pentax is
"copy". Anyway, it's a gaussian design, aka Planar or Biometar, unlike
Pentax 85/1.9 or Jupiter 9, which are I think both Sonnar designs (the
Pentax a bit different).
Quality of CZJ Multicoating of course varied over years. Some
is quite bad (the very early just few years after Zeiss invented
multicoating), then some is quite good, as good as Tamron's BBAR I
think. No SMC though. Lens hood is essential with such big and fast
lens anyway.
> As far as I know, there isn't such a thing that CZJ 2.8/135. CZJ
> made a beautiful 3.5/135 (Sonnar) in this range. The 2.8/135 was
> a Meyer design, and not bad at all for portraiture.
AFAIK the 2.8/135 (6-element) was branded CZJ as well, but it's still
the same old Meyer Gvrlitz design. It's VERY sharp stopped down, don't
know about wide open performance. But the Sonnar 3.5/135 ("S") is said
better. Better contrast, propably less flare too. Sonnar is prewar design, still best
for some lenses.
Frantisek
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