Let me start by saying I'm very new to photography. When I try to shoot at night in manual, my camera will say too dark (don't remember exactly what the message is). Then, without changing any settings I switch to live view and it works! Usually a long exposure and it comes out fine. Any idea why it won't take the picture with the viewfinder? Also, when the shutter is finished, a green light comes on but the camera won't do anything. I have to turn it off then back on again. That's frustrating cause then I have to reset the release mode. Thanks for any help!