DOF in photomicrography

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Sam Smith writes:
> Designing a stereo rig to shoot two
>simultaneous stereo images at high magnification and with a greatly reduced
>base is both possible and feasible. Just like magicians, it can all be done
>with mirrors. Moving the light source/slit/focusing rail in complete
>synchronization is also mechanically feasible. The problem seems to be being
>able to do all this in a very short space of time to minimize movement of
>both subject and camera. For the sake of argument, lets say 1/125th of a
>second as the minimum exposure time for the entire subject. The main problem
>seems to be the light source.

My first thought was to use laser light. That can be very precisely and
rapidly scanned. Then I thought, you'd have to be willing to use B&W film
and maybe very sensitive film to get enough exposure.

Then I remembered that there are optic systems that columnize ordinary
non-coherent light that is then used similar to laser beams for
entertainment shows. Use fiber optics to pipe the columnated strobed light
to the area being photo'd and use a series of devices around and near the
subject to scan or fan the beam in synch with focus depth and exposure
timing. It does sound possible with a lot of development work. You still may
want to research insect anesthetizers! Will Insects respond to flashing
lights by running away or stopping as if hypnotized?

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/


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