Camera Settings
As there are multiple ways your camera can be setup for taking pictures of your tank, these are going to be my personal preference, and how I have my cameras set. This is only a guideline, and there is certainly room for change, and improvement.
Image Quality
This is where you need to decide on the format in which you will shoot your picture. Myself, I always shoot in RAW format. This gives you the most control over your shot, and also, makes it a lot easier to adjust WHITE BALANCE. Which you probably already know, is the biggest battle when shooting under light with a strong shade of blue.
JPEG, is also an option, and in many cases your only option (point and shoot cameras).
If you choose to shoot in JPEG, shoot in the highest resolution your camera will allow. This gives you the most flexibility if you decide a photo needs to be cropped.
White Balance
This is completely irrelevant if you are shooting in RAW mode, as the in camera settings is bypassed anyways.
For those shooting in JPEG, this is a very important step. If you decide you wish to use one of the cameras pre-set settings, you will want to select SHADE, whose icon resembles a house with diagonal lines off one side. On most cameras, and on the Nikon D80, you can further adjust it 3 steps + or -. You will want to set this to -3.
The best option for setting your white balance is to buy a GREY white balance card. Yes, grey is better to use than white. Be sure to find one that is plastic, so it will hold up over time. You will then place this in your tank , and oriented so that it is facing the front of your tank.
Now you will select PRESET in the white balance menu of your camera. On the D80, it then gives you the option of MEASURE and USE PHOTO. Although using the MEASURE feature is probably better, you will quickly become irritated that it will likely reject the reading more times than not. The easier option is to take a photograph of your white balance card, filling as much of the viewfinder as you can. It is important to know that the card need not be in focus, which may not be possible when filling the viewfinder. Take the picture. Now select the USE PHOTO option, and select the photo of the white balance card.
Your camera is now set to recognize what white should look like under your exact lighting scheme. However close, it will not be exact, and cameras are not designed to recognize light at such high temps (meaning 14K-20K). This will give you the best starting point for later adjustment in Photoshop or similar programs.
ISO
This is the setting that really makes or breaks your photos. The higher the ISO setting is, the more grain that will be present in your photos. Always use the lowest setting you can while maintaining a workable shutter speed (in any given situation, with all other settings remaining the same other than shutter speed, as you increase you ISO, the required exposure time will decrease).
I personally, when mounted on a tripod, will shoot at 100-200 ISO. This greatly increases the exposure time needed, but keeps the picture grain free.
Camera Priority Settings
For shooting through the glass of your aquarium, I strongly recommend using the aperture priority setting. On the command dial on the top of your camera (DLSR’s Only), select the A (Nikon) or Av (Canon). This will allow you to set the cameras aperture only. The shutter speed will automatically set to its required speed given the selected aperture.
If you find that all you photos are either under of over exposed you can adjust the exposure compensation + or - by 1/3 steps. Read your camera manual to learn how this is done, as each camera is different.
You are now ready to start shooting pictures of all those beautiful subjects.