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Description
computar 1.1" 25mm f/2.8 12MP Ultra Low Distortion Lens (C-Mount)For 12MP Sensors on 1" Cameras Covers 1. 1", 1", and 2 3" Type Sensors 11. 81" Minimum Focus Distance Lockable Focus and Iris Rings M34. 0 Filter Thread This Computar 1. 1" 25mm f 2. 8 12MP Ultra Low Distortion Lens is designed for cameras with a C Mount for use in a variety of applications. It has a fixed focal length of 25mm, and resolves an image on 1. 1" cameras with 12MP sensors. Featuring a minimum working distance of just under 12", the lens
- For 12MP Sensors on 1" Cameras
- Covers 1.1", 1", and 2/3" Type Sensors
- 11.81" Minimum Focus Distance
- Lockable Focus and Iris Rings
- M34.0 Filter Thread
This Computar 1.1" 25mm f/2.8 12MP Ultra Low Distortion Lens is designed for cameras with a C-Mount for use in a variety of applications. It has a fixed focal length of 25mm, and resolves an image on 1.1" cameras with 12MP sensors. Featuring a minimum working distance of just under 12", the lens focuses to infinity and incorporates both lockable iris and focus rings, so you can leave the lens set up and not have to worry about either ring changing over time. The front of the lens incorporates an M34.0 filter thread.
- For machine vision and ITS applications
- The 2.8 aperture ensures the high resolution of this lens, even when wide open
- The lens works in temperatures from below freezing to over 100 degrees Fahrenheit
- The lens features lockable iris and focus rings, allowing you to set it up and feel secure that both focus and iris won't drift during normal use
In the Box
computar 1.1" 25mm f/2.8 12MP Ultra Low Distortion Lens (C-Mount)
- Limited 3-Year Warranty
| Mount | C-Mount |
| Focal Length | 25mm |
| Focus Range | 11.81" to ? / 0.30 m to ? |
| Iris Range | f/2.8 to f/16 |
| Coverage | 1.1" Type sensor Max Image Format: 0.56 x 0.41" (0.69") / 14.2 x 10.4 mm (17.6 mm) |
| Object Dimensions at M.O.D. | 1.1": 6.30 x 4.72" / 16 x 12 cm 1": 5.51 x 4.33" / 14 x 11 cm 2/3": 3.94 x 2.76" / 10 x 7 cm |
| Effective Lens Aperture | Front Diameter: 0.68" / 17.3mm Rear Diameter: 0.56" / 14.2mm |
| Angle of View | 1.1": 38.7° (31.7 x 23.5°) 1": 35.4° (28.7 x 21.7°) 2/3": 24.8° (20.0 x 15.0°) |
| Distortion | 1.1": 0.3% 1": 0.2% 2/3": 0.1% |
| Back Focal Length | 0.44" / 11.3mm |
| Flange Back Length | 0.69" / 17.526 mm |
| Filter Size | M34.0 P=0.5 mm |
| Operating Temperature | 14 to 122°F / -10 to 50°C |
| Dimensions | Diameter x Length: 1.56 x 1.34" / 3.95 x 3.4 cm |
| Weight | 2.77 oz / 78.6 g |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 1502 reviews
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Product Reviews
★★★★★ 4
Smooth!
Color: Brown, Size: Mid Back, Color: Brown, Size: Mid Back
Good value and looks pretty good. Faux leather feels like Naugahyde. Should be durable since that's what boat seat are made of. Could use a bit more lumbar support, but overall quite comfortable. Wider than I expected (so it must be designed for us Americans.) Casters are fantastic. Far superior to traditional plastic casters. Because these are made of rubber, they are dead quiet and smoooooth rolling across the flooring.
Took about 30 minutes to assemble. Lots of parts but the pictorial instructions were clear.
I'd give it five stars, but I wish it had a bit more height adjustment. We'll see how it holds up, but so far I'm pretty pleased.
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Reviewed in the United States on December 29, 2025
★★★★★ 5
Very pleased with my purchase
Color: Brown, Size: Mid Back
Easy to put together - instructions are good - excellent quality and the chair is comfortable. Far from being flimsy it's a heavy chair which rolls perfectly as needed. You won't find that many good chairs (if any!) at this excellent price. As always the ultimate question is: would I buy it again? The answer is YES, definitively. Great purchase.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
superb, worth 2x the pricez
Color: Brown, Size: High Back
While this may appear to be an average run of the mill copycat sort of generic office chair, it's actually very comfortable with perfect lumbar support. Looks great, and the leather (or leather equivalent) feels durable. This sucker will last me in my WFH setup for years I do not doubt. Save yourself a few hundred bucks getting this versus some "premium" office chair... I doubt you'll notice much if any difference.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
22 year old gamer approved.
Color: Black, Size: Mid Back
So far so good!! I bought this chair for my gamer son, he sat the springs out of his last one, so this one making it this long has me very pleased. It was easy to put together, and the quality is pretty notable, especially the wheels, super smooth rolling. It was definitely worth what we paid for it, and he finds it very comfortable, providing plenty of back support, and a stable seat for hours of gaming.
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Reviewed in the United States on May 10, 2026
★★★★★ 3
The back of the chair is not supportive
Color: Brown, Size: Mid Back
Really nice casters that truly roll quietly. The faux leather is stitched well and sturdy. The only problem i have is that the back is not adjustable and gives 0 back support. The whole back of the chair is hollow inside so your lumbar gets no help. The seat is comfy but super wide like a lot of other reviews mentioned
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Reviewed in the United States on February 22, 2026
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