CRTs work by scanning the image on the screen. Often when photos are taken of CRTs they are shorter than one "Frame" so you will get a band of picture with black before and after it. If you want a whole screen, you want to set your shutter speed for 1/30, since TV traditionally is a 30 Frame per second device.
CRTs work by scanning the image on the screen. Often when photos are taken of CRTs they are shorter than one "Frame" so you will get a band of picture with black before and after it. If you want a whole screen, you want to set your shutter speed for 1/30, since TV traditionally is a 30 Frame per second device.