Thread: The Pentax MX
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Old 04-05-2019   #101
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CMur12 is offline
Join Date: Mar 2014
Location: Moses Lake, Washington, USA
Age: 68
Posts: 1,096
Originally Posted by nickthetasmaniac View Post
A bit OT (and not Leica), but a well known bit of Pentax folklore is that the original Super-Takumar 50/f1.4 '8 element' was an all-in, sold-at-a-loss effort to outperform the Zeiss 50mm Planar. My understanding is that they were successful, before quietly switching to a cheaper 7 element design.

My understanding is that the 7-element 50mm lens that succeeded the 8-element version was made with special (radioactive; thorium?) glass, which Pentax probably felt offered the same performance with one less element. I'm pretty sure the radioactive glass cost more than the more common glass. I don't see it as Pentax lowering their standards.

- Murray
Still shooting film: Medium Format with assorted TLRs; 35mm with manual-focus Minolta SLRs and a Canonet.
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