[MF3D.FORUM:603] Re: lens question

["Oleg Vorobyoff" <olegv@xxxxxxxxxxxxx>]

No, a longer lens with wider base would not give the equivalent of a "normal"
picture due to subtle differences in perspective.  I do not find the effect
unnatural, but then again, I'm not all that sensitive to distortions in wide
angle views either.  The longer lenses do make it easier to keep those
hard-to-view foreground objects out of the  picture.  In any event, the long
lens/wide base combination has opened up for me a wonderful new world to
explore.  My biggest problem has been predicting what the picture will look like
when viewed.  The longer the lenses the more the guesswork.  So far, pleasant
surprises have far outnumbered outright duds.

Oleg Vorobyoff

Bill Glickman wrote:
>An 80 mm lens is used because its "normal" in MF, and because it also
>matches our viewers lenses.  When I tried a 43mm lens, the scene did not
>look natural, it simply looked too wide... as if my brain knew my eyes can
>not see like this in the real world.
>
>      My question is, if you use a 150mm lens and use John B's fourmula for
>the taking base.... how does this look in the viewer?  Unnatural?  I would
>think it would look identical to the 80mm since it would produce the same
>chrome if one stood twice as far away from the subject?  Is there any other
>drawbacks of using long lenses on MF stereo,other than the obvious increased
>chance for blurred images?