Archived posting to the Leica Users Group, 2009/09/05

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Subject: [Leica] math challenged
From: richard.lists at gmail.com (Richard Man)
Date: Sat, 5 Sep 2009 12:44:36 -0700
References: <543014.87311.qm@web55905.mail.re3.yahoo.com>

Yes, but the wides are the normals for the 1.3x crop, so you want the wider 
VF.

It really only matters regarding focusing accuracy, and with the 1.3x
crop, you get more DoF on the same aperture, so the lower mag factor
is canceled out. Certainly you see people shooting F1 all day long on
the M8 with spot on focus so the RF/VF is not an issue in that regard.

On Sat, Sep 5, 2009 at 12:22 PM, H. Ball Arche<h_arche at yahoo.com> wrote:
> OK, so I just learned that the M8's have a 0.68 VF. My question is, what 
> does that translate into, relative to the crop factor of that sensor? ?In 
> other words, is it like what an approximately 0.45 VF would show you on a 
> FF camera?
>
> Since 0.72 has been the 'standard' VF since the M2, I'd have figured that 
> in the M8 they would want to reproduce the same relative field of view, 
> lens for lens, narrowing it appropriately.
>
> If I'd've bothered to wonder about it I would have figured the M8 VF to be 
> 0.86, or 0.91 like the M3 - something narrower than 0.72.
>
> The 0.68 field of view VF in the M8 must REALLY favor the wides, taking in 
> a much broader field of view than would the 0.58 VF with the same lens on 
> a full frame camera.
>

-- 
// richard m: richard @imagecraft.com
// w: http://www.imagecraft.com/pub/Portfolio09/ blog:
http://rfman.wordpress.com
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