We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small silver metal CCTV lens, CS mount, manual focus and iris rings

Computar Ganz

Computar Ganz T2Z1816CS 1.8-3.6mm f1.6 Varifocal CCTV Lens

SKU CH-VHQW-S81XK

A varifocal CCTV lens covering 1.8–3.6 mm with manual iris, focus and zoom for 1/3″ cameras

  • Super-wide 1.8 mm view covers 144° horizontal
  • Varifocal 1.8–3.6 mm range adjusts without changing lenses
  • Bright f1.6 aperture gathers light in dark scenes
  • All-glass optics in metal barrel with locking setscrews
  • Operates from -20 °C to 50 °C for outdoor use

Super-wide varifocal lens for CS-mount cameras

The Computar Ganz T2Z1816CS is a manual-iris varifocal lens built for 1/3-inch format CCTV cameras. It covers a focal-length range of 1.8mm to 3.6mm with a maximum aperture of f1.6, letting installers dial in the exact field of view without swapping fixed lenses. All-glass optics and a metal barrel with locking setscrews keep the setting secure once adjusted. The CS-mount flange back length is 12.5mm.

Passive thermals and manual controls

With no motors or electronics, the lens produces zero noise and draws no power. Its all-metal construction dissipates heat passively across the 37.4mm by 51mm barrel, so operating temperature stays within the rated -20°C to 50°C range without active cooling. Iris, focus and zoom are each adjusted by hand, giving the installer direct tactile control over exposure and framing.

Consistent optics across the zoom range

At the 1.8mm wide end the lens delivers a 173.8° diagonal angle of view, capturing a 123.8cm by 56.5cm object area at 0.2m minimum object distance. At 3.6mm the diagonal narrows to 99.0° with a 33.2cm by 22.9cm object area at the same distance. Back focal length shifts from 7.0mm at wide to 10.5mm at tele, while the effective front aperture remains 22.0mm and rear aperture 7.9mm throughout, maintaining predictable exposure and depth-of-field behaviour during extended surveillance sessions.

Highlights

  • Super-wide 1.8 mm view covers 144° horizontal
  • Varifocal 1.8–3.6 mm range adjusts without changing lenses
  • Bright f1.6 aperture gathers light in dark scenes
  • All-glass optics in metal barrel with locking setscrews
  • Operates from -20 °C to 50 °C for outdoor use

Specifications

BrandComputar Ganz
ModelT2Z1816CS

Questions about this item

How do I install the T2Z1816CS lens and what step is often missed?

Screw the CS-Mount barrel onto the camera until the flange back length reaches 12.5mm, then tighten the locking setscrews; many installers forget the setscrews and the lens shifts when the camera vibrates.

What maintenance or replacement will the T2Z1816CS need later?

The all-glass optics and metal barrel are sealed; only occasional front-element cleaning is required, and the three-year warranty covers any mechanical failure of the manual iris, focus or zoom rings.

What limit appears first on the T2Z1816CS during sustained use?

Operating temperature is rated -20C to 50C; in continuous outdoor deployment the 50C ceiling is reached before any optical or mechanical limit, so ensure the housing provides adequate ventilation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.