I think more likely the 43mm lens is odd is that it is exactly the
diagonal of a 35mm frame making it true normal, at least according to
the convention.
Winsor
Long Beach, California, USA
On Jun 2, 2005, at 4:43 PM, Moose wrote:
> I suspect
> that a faster lens design protrudes just that little bit further back,
> so for example, his lenses are 40/2.8 and 43/1.9. I don't see why the
> odd focal length unless it was necessary to clear the mirror with the
> mechanical details of Pen*x construction.
>
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