When in video mode with my T2i that I just recieved from ebay, The video it shoots is extremely dim (were talking pitch black with a few highlights) with iso 100 in a fairly lit room. I have to crank it to iso 6400 to get any decent results which should not be the case for the room im in. My settings are, iso 100, 1080p @24fps, shutter @1/50, F3.5, Everything set to manual, and custom whitebalance. I don't believe it's my SD card since if I take it out, the same results occur. In picture mode with iso 100 the lighting is fine. What is strange is that if I try holding the image capture button (the button used to take photos) when using AF, the lighting jolts up to being very usable, but if I let go it goes back to being basically black. Please help.
