The Marshall VS-M2812-4MP is a CS-mount varifocal lens with a 2.8–12 mm focal range. It allows framing to be set at the camera installation and uses DC auto iris with a compatible camera.
Marshall VS-M2812-4MP Features
- Variable focal length for framing. The 2.8–12 mm range lets the installer adjust scene coverage without moving the camera mount. The resulting viewing angle depends on the camera sensor, so focal length alone does not specify coverage.
- CS mount and 4 MP rating. The lens is specified for a CS mount with a 4 MP resolution rating. Check sensor coverage as well as the physical mount when selecting it for a camera body.
- Automatic iris connection. Four-pin DC auto iris provides aperture control through a compatible camera. This allows the iris to respond to the camera's exposure control instead of relying solely on a fixed aperture.
- Working distance and aperture. The listed minimum object distance is 0.3 m, with aperture specified as F1.4. These limits help determine whether the lens suits a close demonstration or a more distant scene.
Specifications
| Manufacturer | Marshall Electronics |
|---|---|
| Model | VS-M2812-4MP |
| Mount | CS |
| Resolution rating | 4 MP |
| Focal length | 2.8–12 mm |
| Iris | Four-pin DC auto iris |
| Aperture | F1.4 |
| Minimum object distance | 0.3 m |
Technical Questions
Which lens mount is used?
CS.
What resolution rating is specified?
4 MP.
What focal-length range does the lens cover?
2.8–12 mm.
How is the lens iris controlled?
Four-pin DC auto iris.
What aperture is specified?
F1.4.
What is specified for minimum object distance?
0.3 m.
Buying and Installation Questions
What is the VS-M2812-4MP used for?
It is intended for the compatible equipment and installation described in the specifications.
What should I check before ordering?
Confirm lens mount, image-circle coverage and iris connection against the camera. Viewing angle depends on the sensor size.
