[Leica] 21 % 24 Lenses

[henningw at archiphoto.com (Henning Wulff)]

At 12:25 AM -0400 4/11/07, Stan Yoder wrote:
>I did the math on the diagonal of the 18x27mm sensor of the M8. 
>Turns out to be 32mm near enough, which is what the 24 becomes on an 
>M8. So the 24 is the theoretical "normal" for the M8. However, the 
>50mm 'normal' lens on 35mm film cameras would be better matched by a 
>28mm on the M8 (=37mm.)

Stan, I think you're doing a double conversion there. The theoretical 
'normal' lens, ie, the diagonal, is the actual diagonal. In this case 
it's 32mm. Therefore if anyone made a 32mm lens, that would be a 
'normal' lens on the M8. The 24 is a wide on the M8.

The field of view of the 50 on 35mm film is matched by a 37.5mm lens 
on the M8. A 28mm lens gives the equivalent of a 37mm lens on 35mm 
film.

>Actually, the 28 framelines of the M8 VF include slightly more than 
>the 50 lines of my M2's VF.
>
>And, since a 35mm lens is/was the functional 'normal' with film for 
>many of us, a 21mm lens would be the near-equivalent on an M8.

Again, you're doing a double conversion. The closest common focal 
length equivalent to the angle of view of a 35mm lens on 35mm film is 
the 28mm lens on the M8.

>
>Or am I all wet?
>
>Stan Yoder
>Pittsburgh
>
>_______________________________________________
>Leica Users Group.
>See http://leica-users.org/mailman/listinfo/lug for more information


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