computar C-Mount 8.5mm Fixed Focal Lens

computar C-Mount 8.5mm Fixed Focal Lens

computar C-Mount 8.5mm Fixed Focal Lens

B&H # COM8513 MFR # M8513
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Product Highlights

  • Compatible with 2/3" Cameras
  • 8.5mm Fixed Focal Length
  • 69.4° Diagonal Field of View
  • Manual Iris & Focus
  • f/1.3 to 16C Iris Range
  • Focus: 0.2 m to Infinity
  • C-Mount Connection
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computar M8513 overview

  • 1Description

The C-Mount 8.5mm Fixed Focal Lens from Computar is designed for C-mount CCTV cameras with 2/3” sensors. With an iris range of f/1.3 to 16C, the lens is suitable for surveillance in low as well as bright light conditions.

Designed for C-mount cameras with 2/3" sensors
Iris range of f/1.3 to 16C enables use in low as well as bright lighting conditions
Manual iris for correct exposures
UPC: 781904080601
In the Box
computar C-Mount 8.5mm Fixed Focal Lens
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    computar M8513 specs

    Focal Length 8.5mm
    Aperture Ratio 1:1.3 (maximum)
    Image Format Maximum 8.8 x 6.6 mm (ø11 mm)
    Operation Range Iris: f/1.3 to f/16C
    Focus: 0.65' to infinity (0.2 m to infinity)
    Control Iris / Focus: Manual
    Angle of View 2/3-type: 69.4° (D), 57.4° (H), 43.8° (V)
    Operating Temperature -4 to 122°F (-20 to 50°C)
    Effective Lens Aperture Front: ø20.0mm
    Rear: ø12.0mm
    Back Focal Length 0.48" (12.3mm)
    Flange Back Length 0.69" (17.526 mm)
    Mount C-mount
    Certifications CE, RoHS
    Object Dimensions at M.O.D. 7.32 x 5.35" (186 x 136 mm)
    Dimensions (Ø x L) ø1.53 x 1.24" (ø39 x 31.6 mm)
    Weight 1.76 oz (50 g)
    Packaging Info
    Package Weight 0.15 lb
    Box Dimensions (LxWxH) 1.9 x 1.8 x 1.2"

    computar M8513 reviews

    C-Mount 8.5mm Fixed Focal Lens is rated 4.0 out of 5 by 1.
    Rated 4 out of 5 by from OK lens This lens does what it promises to do. The image quality is decent for the price. It's a very cheap lens and it shows though: It's all plastic except the C-mount ring. No aperture or focus scale, so you're basically guessing the F value and focal distance. Also, the iris has only 3 petals, so the bokeh is an unusual triangle shape. This may be either a pro or a con, depending on your preference. I also have some M0814-MP2 lenses. Those are much better built, all aluminium / brass, better image quality, 6-petal iris, have scales with F numbers etc., but cost twice as much. I keep trying different C-mount lenses for a robot project. My cameras (Ximea XiQ) have an unusually large 1 sensor (CMV4000) and all the 1 format lenses are too big to fit, so I'm trying to modify 2/3 format lenses to reduce vignetting. The M8513 looked like a good candidate, as the plastic body was easier to cut / grind down (and it was cheap), but ultimately, the M0814-MP2 had not only better image quality, it's smaller and I could extend the projected image size more.
    Date published: 2013-05-19
    • y_2018, m_9, d_17, h_14
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