[Leica] Viewfinders and the 2.5mm

[henningw at archiphoto.com (Henning Wulff)]

At 11:44 AM -0600 11/14/05, Jim Nichols wrote:
>Frank,
>I may have overstated the problem, but I look at it like this:  By 
>my measurement, there is approximately 59mm between the viewfinder 
>axis and the lens axis on a IIIf.  Hence, on a IIIf, the VF must be 
>deflected downward by 3.38 degrees, using the paralax adjustment, in 
>order for the VF field of view to correspond to the lens field of 
>view at 1 meter.  If the VF is raised another 2.5mm, the VF needs to 
>be deflected downward an additional 0.14 degrees.  Although the 
>change is small, one could chop off the top of heads because of this 
>when shooting at close distances.
>Jim Nichols
>Tullahoma, TN USA

One can only chop off 2.5mm off a head. If that is important, and 
that amount is significant in a head shot, then the problem is the 
head size :-).

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