Image module

SL-VAD358 & SL-VAD616

Auto-iris Lens 3.5-8mm & 6-16mm

Lensa CCTV SL-VAD358 dan SL-VAD616 memiliki fitur: 1/3 Manual Zoom, Focus, Auto Iris, DC Drive, CS Interface.

  • SL-VAD358 : 3.5-8mm, 1/3 Manual Zoom, Focus, Auto Iris, DC Drive, CS Interface
  • SL-VAD616 : 6-16mm, 1/3 Manual Zoom, Focus, Auto Iris, DC Drive, CS Interface

Spesifikasi Lensa SL-VAD358

Imager Size : 1.3″
Focal length : 3.5-8mm
Mount Type : CS
Aperture Range : F1.4-360°
Field : 95.45°-44.6°
Focusing Range : 0.3m
Back Focus : 7.5mm

Spesifikasi lensa CCTV SL-VAD616

Imager Size : 1.3″
Focal length : 6-16mm
Mount Type : CS
Aperture Range : F1.4-360°
Field : 54°-23°
Focusing Range : 0.3m
Back Focus : 8.1mm

Fitur Lensa CCTV SL-VAD358 dan SL-VAD616

Lensa CCTV SL-VAD358 dan SL-VAD616 memiliki fitur: 1/3 Manual Zoom, Focus, Auto Iris, DC Drive, CS Interface.

  • SL-VAD358 : 3.5-8mm, 1/3 Manual Zoom, Focus, Auto Iris, DC Drive, CS Interface
  • SL-VAD616 : 6-16mm, 1/3 Manual Zoom, Focus, Auto Iris, DC Drive, CS Interface
Auto-iris lens

Automatic iris CCTV lens are controlled by the camera to make sure that the right amount of light gets through to the imaging chip. Too little and the iris opens up. Too much and the iris shrinks. Tweak during CCTV set-up this lens or camera automatic level control (ALC) needs tweaking so as to aim for the desired brightness. The smallest auto-iris lenses have few electronics inside because the driving amplifier is in the camera.

More sophisticated auto-iris (AI) lenses contain their own amplifier which provides two pots. One is for adjusting video level, as described above. The other is called ‘peak/average’ and when turned fully to ‘peak’ it considers the brightest part of the scene when controlling the iris. When turned fully to ‘average’ it considers the whole scene’s brightness when controlling the iris.

This latter case is most common in normal use, but the peak function can be vital where brightest areas must retain details, even at the expense of shadow details, especially under night time lighting. Traditionally, the heavier auto-iris lenses contained servo motors to drive the iris mechanism, especially inside large zoom lenses. Small direct drive lenses use lightweight ‘galvometric’ electromagnetic actuators for the iris, as do some AI lenses now.

Brochure

.jpg