EOS 1.6 x 50mm VF observation

[Ken Durling]

OK, this is probably meaningless to most but me, but I just noticed 
something about the effective 80mm FOV of the 50mm lens and the 
specific VF magnification of the 30D.  Ever since I was first exposed 
to discussions about what constitutes a "normal" lens, I've been 
interested by the fact that given a certain VF magnification, there 
will be one focal length which will produce the same "size" image in 
the VF as to the naked eye - pass your eye from the scene to the VF 
and the angular FOV coverage of a particular object will remain the 
same.  On all my 35mm cameras a 50mm lens produces an image in the VF 
that is significantly "smaller" than the live view.  Experimenting 
with zooms, I find that this match is achieved at roughly 70mm. (It's 
interesting to me that there are very few or no 70mm primes for 35mm 
cameras)   Now, with the combination of the 80mm FOV of the 50mm lens 
on the 30D with 1.6x crop factor and about a 90% VF magnification, I 
find an almost exact match for "live view."  Mind you I don't attach 
major significance to this, just interest, but I think for me it has 
a subtle smoothing effect on my visualization of a photograph - see a 
scene, and when I lift the camera to my eye there's a certain continuity.

Ken
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