[Leica] CV 15mm lens on M8

[kididdoc at cox.net (Steve Barbour)]

On Mar 27, 2008, at 9:22 AM, wildlightphoto@earthlink.net wrote:
> Steve Barbour <kididdoc@cox.net> wrote:
>
>> 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...
>
> The befuddlement in part comes from popular and erroneous  
> terminology.  The
> 15mm lens does not become a 21mm lens.  Its angle of view is reduced  
> on the
> smaller (compared with 35mm) sensor to about that of a 21mm lens on  
> a 35mm
> film camera.  The angle of view of the 15mm lens on the M8 matches  
> that of
> the external viewfinder (originally for a 21mm lens on 35mm film)  
> because
> the viewfinder isn't cropped.
>
>> so... can one also use the M8 viewfinder, as the viewfinder for a CV
>> 15mm lens...?
>
> No.  The M8 viewfinder can be used for framing with the 21mm lens  
> because
> the 21mm lens is cropped on the M8's sensor.
>
>> Why is this so difficult?
>
> Because the popular terminology is bogus.


thank you Doug, and all others who helped me sort out this goofy  
question...Steve


>
>
> Doug Herr
> Birdman of Sacramento
> http://www.wildlightphoto.com
>
>
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best,
Steve

kididdoc@cox.net


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