As was pointed out you can see the exif data if you want. I used an 18-200mm macro lens with a circular polarizer filter to reduce glare and tried to get a decent angle on the glass to avoid the reflection of the flash. I also used a speedlight on the camera with ttl metering which worked pretty good except on very shiney or siver fish which it wiped out completely. Other than that it was just a matter of looking for a part of the tanks to take pictures thru without finger prints, nose prints, etc. I should have brought along some windex.