Bell & Howell 2123 XL marketed in 1978 design: 2123-F silent super 8 cartridge lens: B&H Zoom f: 1.2 \ F: 8.5-24 mm zooming ratio: 3x focusing: manual, dual beam focusing zooming: auto and manual filter size: ? viewfinder: single-lens reflex with adjustable eyepiece viewfinder information:? exposure...