Hi everybody. New member here. Used to have a D70. Just getting back into shooting HD video now and just got a D3300. I have a question about locking the exposure. Today while shooting video of myself playing guitar, on playback I noticed as I moved I was affecting the exposure, and the settings were adjusting themselves. Everything I've read about exposure lock has to do with setting exposure and holding down the AE/AF button, but, since I only have myself to shoot video with, I can't always be at the camera. Is there a way to lock the exposure and keep it locked while I shoot video without holding down the AE button?