[Leica] CV 15mm lens on M8

[leowesson at gmail.com (leo wesson)]

I never use the external finder with the 15.  I've just learned to keep both
eyes open and compensate in my brain.

Leo



On Thu, Mar 27, 2008 at 4:13 PM, Geoff Hopkinson <hoppyman@bigpond.net.au>
wrote:

> Steve, your 24mm lens virtually fills the M8 viewfinder. That is the
> widest
> frameline built-in. I don't know how you can see anything outside that
> frameline. Due to the (smaller than 24x36) sensor crop, that frameline
> shows
> you an approximation of the crop effect (about the same view angle as a
> 32mm
> on a film M)
> To use a 15mm lens you should use an external finder which is designed for
> a
> 21mm lens on a film M.
> All of the framelines show less than the actual sensor capture anyway.
> (they
> are calibrated for the view at .7m)
> The key is to think of the framelines as approximating the view angle, not
> the nominal focal length. Each lens produces the same image at the plane
> of
> focus on any M. The M8 sensor, being smaller than 24x36, actually captures
> about 75% of it.
>
> Cheers
> Geoff
> http://www.pbase.com/hoppyman/e
> http://gallery.leica-users.org/v/gh/
> -----Original Message-----
> From: lug-bounces+hoppyman=bigpond.net.au@leica-users.org
> [mailto:lug-bounces+hoppyman=bigpond.net.au@leica-users.org] On Behalf Of
> Steve Barbour
> Sent: Friday, 28 March 2008 02:06
> To: Leica Users Group
> Subject: [Leica] CV 15mm lens on M8
>
> a question here , as my logic becomes  befuddled...
>
>
> A 21mm lens on the M8 just about fills the M8 viewfinder...
>
> a CV heliar 15mm lens on the M8 is really a 21mm lens, and can be used
> with a 21mm external viewfinder...
>
> so... can one also use the M8 viewfinder, as the viewfinder for a CV
> 15mm lens...?
>
>
> Why is this so difficult?
>
> (a yes or no answer is inadequate, without some logical explanation...
> please)
>
>
> thanks, Steve
>
>
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>
> "I never wanted to be famous"
> http://www.blurb.com/bookstore/detail/186890
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