Anybody know anything about this lens? Leitz 17mm f0.6

Started May 18, 2012 | Discussions thread
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CelticOdyssey
CelticOdyssey Senior Member • Posts: 1,621
Re: Anybody know anything about this lens? Leitz 17mm f0.6

wornleather wrote:

It says f0.6on the flight case the lens came with which I assume is accurate as it's seems to be the original factory case. Any idea how the intensity is calculated?

All I know is that the speed is the distance from the lens to the focal plane divided by the lens diameter. With a compound lens, I'm not sure which lens element.

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