ACTi PLEN-0119 CS-Mount Fixed Iris Lens

The PLEN-0119 is a 1/3" CS-mount replacement lens with a 2.8mm focal length and fixed f2.0 iris, built for techs who need to swap or stock a spare optic for compatible ACTi box cameras rather than replace the whole unit. Fixed iris means no field calibration — mount it, focus once, done. That keeps install time down on multi-camera rollouts where every extra step per drop adds up.

Compatibility

Confirmed fit for the ACTi E11 and E21 series cameras. Both are CS-mount box bodies, so the PLEN-0119 threads directly onto the sensor mount without an adapter. If you're servicing a mixed fleet of E11/E21 units, stocking a few of these as spares avoids downtime waiting on a full camera swap when an optic gets damaged.

Installation Notes

1/3" CS-mount thread — verify your camera body is CS-mount, not C-mount, before ordering; the two look similar but aren't interchangeable without a spacer. The fixed 2.8mm focal length gives a wide field of view suited to close-range coverage (small rooms, doorways, tight corridors) rather than long hallway or perimeter throws — for those, a varifocal or longer fixed-length lens in the same ACTi lens line is the better fit. At 0.35 lb and roughly 2.8 x 3.0 x 1.0 in packaged, it ships small enough to hold as on-hand spare stock without eating shelf space.