Originally Posted by Subzero

Manjeet,
When we took images of fish in tanks,we did the following, which may/may not be of use as a starter for you.
Clean inside and outside of the glass panel that you are going take image through.Get a piece of clear glass that is almost same size as the end panel you are going to shoot through.This piece glass is so that you can "contain" the fish within a "narrow band" and maintain a constant focus on it.You will need one/two flash units of low to medium power ie not one which turns night into day(unless power can be turned down).Try one at front above the fish (right up against the glass) at about 30deg to the glass and if required the other from the side.Do not worry too much at this stage about reflections, lets see if you can at least get an image and then see where the reflections are coming from.Try to avoid areas of the tanks where the airation pipes etc are, and allow the fish to settle otherwise it may churn up loads of sediment from the tank bottom.Don Hoey maybe able to advise you on how to trigger the flash from 20 feet.
What sort of fish is it anyway?
regards subzero

Originally Posted by Subzero

Manjeet,
When we took images of fish in tanks,we did the following, which may/may not be of use as a starter for you.
Clean inside and outside of the glass panel that you are going take image through.Get a piece of clear glass that is almost same size as the end panel you are going to shoot through.This piece glass is so that you can "contain" the fish within a "narrow band" and maintain a constant focus on it.You will need one/two flash units of low to medium power ie not one which turns night into day(unless power can be turned down).Try one at front above the fish (right up against the glass) at about 30deg to the glass and if required the other from the side.Do not worry too much at this stage about reflections, lets see if you can at least get an image and then see where the reflections are coming from.Try to avoid areas of the tanks where the airation pipes etc are, and allow the fish to settle otherwise it may churn up loads of sediment from the tank bottom.Don Hoey maybe able to advise you on how to trigger the flash from 20 feet.
What sort of fish is it anyway?
regards subzero

Originally Posted by Subzero

Manjeet,
Very well done, a good effort considering the technical problems.Of the two images, the 2nd image of the fish appears sharper and in both cases the background appears to be a bit sharper than the fish.This could be for several reasons.
a) The fish is moving/or has move during exposure.
b) You were not accurately focused on the fish.
c) You maybe at the near focus limit of your equipement, ie it might might appear in focus when it really is just a bit out.

Did you manage to constrain the fish as suggested or use other means?

Suggest that you suspend a "piece" of something about 4" square with very legible writing /numbers on it and try focusing on that and also take a few pics. The results should eliminate if it was movement of the fish, and should also show up any inaccuracies in your focusing or whether you are at the limit of your equipments auto focus/manual focus etc.
But don't give up you are nearly there.
regards Subzero.

Originally Posted by Christine

Good try,Manjeet,not an easy subject.Perhaps the lighting in the fish tank is not helping.Or could you not try with the room dark and the fish tank lit up?.

Originally Posted by miketoll

The best suggestions I've got (apart from a nice new digital slr!) would be to increase the power of the lighting above the tank but further from the scope /camera than the glass, if you see what I mean, and then turn all the room lights off which should more or less cut out the reflections. The trouble with flash with the set up mentioned is that I don't think it will have any method of synchronising the flash with the shutter. Use a glass "cage" to constrict the movement of the fish. Hope this helps. Mike