P3D Re: Focal lengths in various formats

[Mark Shields <beamsplitter@xxxxxxxx>]

It is very true that the image on film is constant. Your point
is well taken.

If I were going to do the same shots with twinned cameras instead,
however, and using, say, 135mm lenses, the resulting pair of
full-frame images would have to be printed at less
magnification to fit in the same space in the yearbook. That could
present a problem all in itself--perhaps someone would make wallet-size
prints from full frames, and these would then fit
in the same space as the beamsplitter pair.

OTOH, if I would use the same 85mm lens sans beamsplitter, there
would be a bunch of wasted space around my main subject. So the
editor would crop that picture and make it smaller.

Depending on how you take the picture, enlarge it, present it,
there are all sorts of variables.

Of course, if you take an image from a smaller format and enarge
it in any way to fit the same space as the image from a larger
format, the quality will be less. Life is full of compromises.

In any case, I don't think that at this point, I am going to buy
another 85-150 zoom lens and twin a pair of Olympus OM-10's
(and I do have both cameras) for soccer games!  :-)

Mark
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