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From: Paul Carmichael <wibbleypants@gmail.com>
Subject: Physical size of lenses
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From: Paul Carmichael <wibbleypants@gmail.com>
Newsgroups: rec.photo.digital
Subject: Physical size of lenses
Date: Wed, 29 Nov 2017 11:09:04 +0100
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Good morning everyone.

I have a trivial question:

On my desk in front of me are two lenses. Both Samyang primes. One is a 35mm f1.4 and the 
other is an 85mm f1.4.

I'm just curious as to why the 35mm is so much physically longer than the 85mm.

And a related question: I have a Vivitar 35mm f2.8 that fits in the palm of my hand, 
whereas the Samyang is huge. I suspect the answer is obvious, but not to me.