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Re: Re:Re: [OM] Aerial Photography

Subject: Re: Re:Re: [OM] Aerial Photography
From: "John Petrush" <petrush@xxxxxxxxxxxxx>
Date: Sun, 15 Aug 1999 19:12:54 -0400
My experiences are few but I'll offer what I can.  The vibration from the
plane is considerable to be sure but your body acts as a damper to a large
degree.  A gyro is nice if you happen to have access to one but high shutter
speeds will suffice.  At least one step faster than the 1/focal length hand
held rule will do, two if you can.  Depth of field is really not a big issue
since the whole scene is essentially at infinity focus.  Modest focal
lengths worked best for me - 50 and 85.  You have the advantage of
controlling FoV to a large degree with altitude.  A 28mm seemed a bit too
wide most times and a 135 a tad long.  The exception to the 135 was in
isolating a single building or structure.  I have a great shot of Three
Rivers Stadium in Pittsburgh taken with a 135 f/2.8 that just filled the
frame.  For in-cockpit shots a 20 or 24 would be called for I'm sure.  Early
in the day, or late in the afternoon are best I think.  The sun is low in
the sky giving more of a sense of relief and dimension to the scene.  At
high noon there are no shadows to give any depth.

Film is always so much a matter of personal preference.  I found a modest
ISO speed (I consider ISO 100 slow) helpful in getting the shutter speeds
necessary, as is fast glass.  Pick a film that suits you with high enough
ISO to get 1/500 or faster shutter speed.  As for IR film, why not?  If
nothing else it'll be an interesting experience.

John P
______________________________________
there is no "never" - just long periods of "not yet".
there is no "always" - just long periods of "so far".

W. J. Liles <wliles@xxxxxxxxx> wrote:
> ..... However, I actually was sorta hopeing someone would have
> at least teeny bit of advice on what films to use, is infrared film
> helpful to show foliage differences, what lenses are best to use (the
> airplane does vibrate), time of day to show best detail, etc.  I have
> some ideas but no experience.




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