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Old 08-17-2009, 07:06 PM
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inkista inkista is offline
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Join Date: Jan 2007
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Cool beans. That tech info just clicked a lot of things into place in my head.

Quote:
Originally Posted by Doug Pardee View Post
...One of the features of micro-4/3 is a reduced flange-to-sensor distance of a bit over 19mm. It should be possible to make a 25mm "normal" lens with a simple Gaussian design for micro-4/3. It seems that nobody has chosen to do so (yet).
Panasonic keeps saying they're going to come out with that 20mm f/1.7 pancake... (sigh).... I do wonder if the Oly 17mm f/2.8 pancake is built along those lines.

Interesting, though, that four-third's flange distance is 38.67 mm, which might explain why making a cheap normal may be impossible for the format. A simple design could only be achieved at around 40mm, and that's too long to be normal. Also explains why they chose the flange distance they did for micro four-thirds.
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Last edited by inkista; 08-17-2009 at 07:13 PM.
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