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Chris: How big are your fish?
And a couple of suggestions from some work I did a while back. I used a photographic copy stand with a Nikon camera mounted on a bellows (and the Nikon lens mounted on the other end of the bellows, of course). The bellows allows you to adjust image magnification to fill the frame. For lighting I used a ring flash which is like a regular camera flash, except that the flash tube is formed in a ring that surrounds the camera lens. The flash screws into the camera lens just as a lens filter would. Use a remote shutter release so the camera doesn't shake when you shoot the picture.
My work was done before digital cameras became widely available. If you have the budget, I'd suggest one of the professional grade digital cameras based on a SLR camera body. The reason I suggest this is that by having a standard (Nikon or other) lens mount you can then mate the camera to a bellows, your choice of lenses, or a microscope. That's something you can't do with a low-end digital camera that has a fixed lens.
I immersed the fish on their side in water so they'd have a natural body conformation when photographed. I saw a paper a long time ago (I forget the citation) where the investigator anesthetized the fish, and then used a small tube (and syringe I think?) to suck onto one side of the fish; he or she then used the tube holding the fish by suction to position the fish in its normal swimming orientation, and then photographed the fish from the opposite side of the tube.
Jim Power
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> Dear all,
> I'm involved in a project looking at variation in fish morphology & we will
> be photographing fish and using geometric analysis to look at shape etc.
> I want to construct a frame to ensure all fish are photographed under the
> same conditions (light etc).
> Has anyone got any handy pointers regarding design, choice/intensity of
> lights etc?
>
> I have gone to google, but all my searches lead to pages describing the
> photography of fish in tanks or underwater!
>
> All the best
> Chris
>
>
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> Dr Chris Harrod
> Max Planck Institute of Limnology
> Dept Physiological Ecology
> Postfach 165
> D-24302 Plon
> Germany
>
> [log in to unmask]
> Tel: +49 (0)4522 763 283
> Fax: +49 (0)4522 763 310
>
> www.mpil-ploen.mpg.de/
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