Forum: Pentax SLR Lens Discussion
03-25-2016, 04:24 AM
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Har !!! :)
Seriously, though, the Vivitar certainly did OK, but the Nikkor did impress me a bit more.
Thanks for the interesting test.
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Forum: Pentax SLR Lens Discussion
03-24-2016, 07:53 PM
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Well, in the portrait shots, the woman smiles more for the Vivitar than for the Nikkor, so that has to count for something, right?
:)
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Forum: Pentax SLR Lens Discussion
03-23-2016, 07:30 PM
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Yes. But, it can generally be shortened (or even removed totally), often fairly easily.
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Forum: Pentax SLR Lens Discussion
03-23-2016, 04:48 PM
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I think "the word on the street" suggests that old Kiron lenses are often likely to have gummy diaphragm blades, probably due to a poor original lubricant, and there may have been even a few instances of element clouding from outgassing from Kiron lubricants. Undoubtedly this is not universally true. In any event, a properly CLA'ed Kiron lens can easily be reborn. [I personally have never had sticky aperture blades on any of my Kiron-made Vivitars.]
As for Cosina, it has made perhaps a number of less than stellar lenses, often under contract for other companies. I suspect that it is unlikely that Cosina would spend extra money on its own to better the specs for a lens design intended by the client company to be an inexpensive lens. OTOH, Cosina has made some good lenses, too -- e.g., it also makes some of the latest Zeiss lenses, and they're nothing to sneeze at.
Finally, regarding Komine lenses, they have made a number of very high quality lenses for Vivitar that speak highly of that lens builder.
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