PIX 2015

What is your idea of "the lens gap?"

Started Feb 1, 2014 | Polls thread
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Re: What is your idea of "the lens gap?"
In reply to micksh6, Feb 1, 2014

micksh6 wrote:

Pic Man wrote:

Another thing I almost forgot, is more pancake lenses. Especially primes. Olympus missed a trick by not making their new 25mm a pancake. I believe small lenses will bring more new users to this system.

The pancakes can only have focal length close to flange distance - 14-20mm for m4/3. 25mm pancake was possible only because 4/3 flange distance is longer.

Is this true?  I'm no lens design expert, and I'm interested to know why this is the case?  Can you elaborate?  how does Fuji do it with the 27mm pancake they offer with a 17.7mm flange distance?  Is this design principle related to sensor size/AOV?


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