By: Computar
Lens Optics for over 40 Years
Contact us for lowest price (800) 284-2288, (858) 565-1101,, or fax (858) 300-4193
2/3" 8.5mm F1.3 Monofocal W/o Iris (C Mount)

The Computar M-8513 Monofocal manual iris lens is an economical choice providing fixed focal lengths and a very simple and compact design. The M 8513 has a focal length of 8.5mm, an Iris range of F1.3, and 2/3" Format.

Focal Length 8.5mm
Max. Aperture Ratio 1:1.3
Max. Image Format 8.8mm x 6.6mm
Operation Range Iris = F1.3 - F16C; Focus = 0.2m-Inf.
Control Iris = Manual; Focus = Manual;
Object Dimension at M.O.D 18.6cm x 13.6cm
Angle of View D = 69.4; H = 57.4; V = 43.8
Operating Temperature -20C - 50C
Effective Lens Aperture Front = 20.0; Rear = 12.0mm
Back Focal Length 12.3mm
Flange Back Length 17.526mm
Mount C-Mount
Dimensions 39mm x 31.6mm
Weight 50g


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Prices and specifications subject to change without notice.