Re: Technical Help

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

>I have a Minolta AF 7000 and envision getting a second.
>These cameras have a remote electronic shutter release which plugs into the
>camera via a small jack.  Has anyone ever tried splicing two of these
>remotes together, one button / two jacks ?   

I have done this with a pair of Minolta X-700.  I don't see why it could
be a problem.

>Secondly, when shooting sports
>with the 35mm, I most often use a 70 - 210 mm zoom lens.  Can anyone give a
>lead on any calculations of lens spacing for varying focal lengths ?  I
>presume that the standard  2-1/2"  +/- is not universal.

It is more a matter of distance to the closest object and less a matter
of focal length.  One good starting point is that lens spacing = 1/30 x
distance of closest object.

I have had good results at Sea World stopping action with a trainer at
the top of a whale.  I used 1/250 shutter speed, 135 mm lenses and about
6 inches lens separation.

George Themelis


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