Focusing Screen EC-1D Crop Lines
The Canon EC-1D Crop Lines Focusing Screen Set consists of two screens, one delineating a square format and the other a 4x5/8x10 format. The Crop Lines set, is comprised of screens with the aspect ratio area marked with a thin border. The screens incorporate a crop line to aid in shooting to a fixed aspect ratio. Both screens are otherwise identical to the standard screen and no adjustment is required for proper ambient or flash metering.