i have a silly question and i feel i should know this, but i dont! what is the thing called that you can put on your lens... it doesnt COVER the lens like a filter would, but it just surrounds the lens. it sticks out from the lens about 3 or so inches, and when you dont want to use it, you can screw it on your lens the other way so it's not sticking out. hope that made sense. just wondering what those things are called and what they're for. lens flare or something to that effect? i really have no idea. i was a photo major in school, yet i cant even seem to explain things like that. i feel silly, but i thought you guys could help. also, i'm in the market for a new digital camera, and i've been eyeing the nikon d70. anyone have it and what do you think??