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Subject: Re: Physical size of lenses
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From: nospam <nospam@nospam.invalid>
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Subject: Re: Physical size of lenses
Date: Wed, 29 Nov 2017 11:18:50 -0500
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In article<f8847bFlt13U1@mid.individual.net>, Paul Carmichael<wibbleypants@gmail.com> wrote:

> >> 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.
> > 
> > retrofocus design
> 
> Yeah, when I was googling it earlier, I bumped into a piece about why 50mm
> lenses are so much cheaper than 35mm. The article referred to retrofocus.
> 
> I also just remembered, my 35mm Samyang has aperture control from body, so I
> assume there's extra gubbins for that (motor etc.).

the motors make it slightly thicker, not longer.