One generation earlier than the 06A.
According to the
adaptall-2.org site the CZ500 traded off susceptibility to red-purple CA in favor of blue-green fringing on the theory that it would be less noticed in typical nature shots. An interesting design choice in the days before digital processing. (IMO, the 360B may do something similar.)
I've found it to be quite satisfactory used with consideration for it's age.
I suspect that the SP version (31A) with a new optical design and able to focus with F5.6 MIGHT offer noticeable improvement over the CZ500 -- but I see no advantage to the more costly 06A model.
This lens works well for close-ups in the 300-450mm FL range once you tweak the exposure settings.
The cinder blocks were at about 72 yds with the 200F 2X TC. The hummer was at 12 ft without the TC. Both shots at ISO 400 with a K200D at F8 and 450mm.
Cropped, re-sized and sharpened in Faststone IV.
H2
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