Projection lens for overhead projector Triplet 2.8/80 in excellent condition. The back section is approximately 60 mm, so you can install it on any camera. The lens has no aperture, as well as a helicoid. For ease of focusing, you can install a helicoid from another lens. The lens gives a soft picture. Interesting for art photography. Specifications: Focal Length 74.92 mm 55 ° angular field of view Front focal length 62.76 mm Rear focal length 65.82 Transmittance 0.80 Resolution power - center 35lin / mm, field 15lin / mm The largest diameter of the frame is 85 mm The Industar-58 3.5 / 75 lens is a reproduction four-lens anastigmat of medium aperture. Lenses are chemically enlightened (yellow enlightenment).
Product condition: Excellent condition. Lenses clean no scratches, fungus and dust.