my tank light is a cheap repurposed reading lamp. I just jury rigged it after i got my comps since the cave tetras could care less about light and i wanted to save some cash. I was hoping for apeture and shutter speed advice and the patience i agree with. I finally got a somewhat good photo but i just can't get the amazing ones i see for contests or show off threads.
Hi,
I would look at the EXIF data on the good shot you got. The EXIF data will give you your image size, shutter speed, ISO, Aperture (f#), date and a whole bunch of other info. You want to grab the ISO, Shutter, and Aperture info and use that as a starting point.
Once you have this info, you can then start "sculpting" from that to create a better shot in Manual mode. For example, if your EXIF data shows your camera shot at ISO 400, 1/50 shutter and f4 then turn your ISO up a bit and this will allow you to turn the shutter speed up as well. So try turning it to say ISO 500 and try 1/60 shutter speed (this is an example).
As far as aperture goes (aperture controls how much light goes through the lens and hits the sensor as well as sharpens or softens your image and affects your depth of field) the higher the number the sharper your shot will be but you will take in less light. The lower the number the more light you'll take in but your depth of field will be affected. With your situation (low light) you need a smaller number to allow as much light to hit your sensor. Any higher numbers will make you need to drop your Shutter speed to absorb light and will result in motion blur.
Keep playing with the ISO. Turning up your ISO will make your camera more light sensitive but can create more noise (noise=grain) in your image. A program like noise ninja or neat image can help you remove the noise.
unfortunately, due to the variables in lighting strength we are not able to give you a setting that will immediately work. That is dependent on what is in front of you. The brighter the light the more room you have to play with. The brighter the light source, the higher the shutter speed you can use and the sharper your image will be without motion blur.
Obviously, there are more advanced setups which are more suitable for use with DSLR's and really high end Point and shoots. Even though yours happens to be an advanced point and shoot you are limited to available light and your onboard flash but you can still accomplish quite a bit. As, Tankasaurus and clownknife said, Patience is key. You will take many shots and a few usable ones.
I didn't want to overwhelm you with photography jargon so if you have any questions or need clarification please feel free to PM me.
Cheers,