Michel Adam writes:
> Still an OK price (actually, quite good!).
It's a marginally more than I paid for mine but I think that one's in slightly
better condition. If I remember right, the B&H "new" price is about US$1,500.
If I didn't have one already I'd be seriously considering this one...
> The Zeiss clone (Distagon, and I _beleive_ without aspherical element) goes
> for a lot more.
I've also heard the CZ lens doesn't have an aspherical element; in fact I've
seen its optical diagram somewhere. If I remember correctly they made some
minor optical changes and added one extra element, and I suspect this was to
avoid having to include an expensive aspherical one.
> You might have to cut & past the link, but it is informative.
Here's the first CZ one your URL returned:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1251101057
Wow!
> The Pentax version may even have a superior coating.
I've heard there's not a lot between the CZ and Pentax coatings.
> Has anyone ever done a comparison of the Zeiss and Pentax version?
I'm also curious to know :) Especially considering the price difference. CZ
may have used tighter tolerances in the grinding and assembly processes,
making the wide-open performance better and lowering sample-to-sample
variation. In fact, they may have achieved this by just omitting the aspherical
element. They weren't easy to make in those days. BTW, I'm totally guessing
here :)
Cheers,
- Dave
David A. Mann, B.E. (Elec)
http://www.digistar.com/~dmann/
"Why is it that if an adult behaves like a child they lock him up,
while children are allowed to run free on the streets?" -- Garfield
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