[Future]

I'm using a Sony Cybershot 4.1mp digital and it has the option to accept lenses, but I can't find anything. Is there a universal that will fit this camera?

Oh yea, I'm cheap too so ..lol

[zhenya]

What is the exact model number on this camera?

[Poseidon]

Nope.

Unless I am mistaken you have a point and shoot right? There may be screw on diopters but not any tubes that you can use. Extension tubes require a removable lens, where the tube can be placed between the lens and the sensor.

[Future]

Honestly I'm not a big camera kind of person unless having an original Brownie camera from the 30's 40's counts for anything..lol

I couldn't tell you what it is, but it does do that zoom thing and has a removable cap that allows for lens attachments.

Model # is.. DSC-P73

[Poseidon]

Honestly that camera is much better suited to the average family type stuff, rather then macro work in your fish tank. I don't think a diopter would be a good investment at this point, you can try and use a high quality magnifying glass, taped to the side of the tank, and then place a coral behind it, and then shoot through the looking glass so to speak.

A better option would be to replace the camera with one of the newer point and shoots that do have much better macro capability, Olympus makes one that is water proof, you can put it right in your tank!