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Prakticar aperture blade style?
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PostPosted: Sun Oct 24, 2010 6:57 pm    Post subject: Prakticar aperture blade style? Reply with quote
I have this hypothesis that when CZJ launched the Prakticar series for PB-mount, the political/economical pressure forced the engineers to make some cost cut decisions.

In order to examine this hypothesis, I would like to know what the different PB-mount lens (CZJ-only, I'm not interested in the Pentacon-based Prakticar-lenses) aperture blades look like. Are the blades curved or straight? For example the 300/4 seems to have totally straight blades, while for example the m42-Pancolar 80 has rather strongly curved aperture blades. Also I'd be interested to know if the material used has changed during this period.
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