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computar M8513 Monofocal Manual Iris Lens (8.5mm)

B&H # COM8513 MFR # M8513
computar M8513 Monofocal Manual Iris Lens (8.5mm)


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Product Highlights

  • Designed for C-Mount Cameras
  • 8.5mm Fixed Focal Length
  • f/1.3 to 16C Iris Range
  • Focus 0.2 m to Infinity
  • Manual Iris & Focus
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You Pay: $65.00

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The computar M8513 Monofocal Manual Iris Lens (8.5mm) 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 ensures enhanced performance in low as well as bright lighting conditions
Manual iris for correct exposures
Focal Length 8.5 mm
Aperture Ratio 1:1.3 (maximum)
Image Format 8.8 x 6.6 mm (ø11 mm)
Operation Range Iris: F1.3 to F16C
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: ø20.0 mm
Rear: ø12.0 mm
Back Focal Length 0.48" (12.3 mm)
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)
computar M8513 Monofocal Manual Iris Lens (8.5mm)
  • 3-Year Warranty

    by PowerReviews
    computarM8513 Monofocal Manual Iris Lens (8.5mm)

    (based on 1 review)

    Ratings Distribution

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    Reviewed by 1 customer

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    (1 of 1 customers found this review helpful)


    OK lens

    By Skyline Robotics

    from San Mateo, CA

    Verified Buyer



        Best Uses

          Comments about computar M8513 Monofocal Manual Iris Lens (8.5mm):

          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.

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