Bell & Howell incre-lite 3.5 inch f/2.3 click to stop animation, click and hold to drag, double click to restart or invert animation. Company Bell & Howell Country United States Year of manufacture 1950s Type 16mm projection lens Focal length 90mm Aperture f/2.3 Image circle at infinity Photographs taken with this lens Related lenses Bell & Howell incre-lite 3 inch f/2 Back to lens overview