09-04-2021, 01:59 AM
I'd suggest you try a polarizing filter, and lighting from above the tank only. Regardless, you'd have to shoot perpendicular to the glass of the tank, there is no way around it.
The transition from air to window glass, basically what a tank panelis made of, and water, generates a lot of unknown quantities when it comes to refraction and reflection. Effectively, it works like a not-so-great lens as you already noticed, and even more so at angles.
Alternative is to do proper underwater photography, but that gets expensive very quickly.
The transition from air to window glass, basically what a tank panelis made of, and water, generates a lot of unknown quantities when it comes to refraction and reflection. Effectively, it works like a not-so-great lens as you already noticed, and even more so at angles.
Alternative is to do proper underwater photography, but that gets expensive very quickly.
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....