taking pictures of my tank

[hwynboy]

I have a great digital camera...a ear ago it was the best thing out there, so I know it's not the technology...how do you guys take pics of your tank up close of stuff in it? I keep taking them but they are blurry or too dark or mostly just not clear enough...my digital camera is 4 megapixels...I can see someone's nosehairs across the street with this thing, but I can't take a picture of this in my tank. I don't know if it is Aiptasia it is all over my LR and its a light green color...there looks to be a lot of it all over. is this aiptasia or just algae? or can you not tell without a pic? help!