Orders placed after 4pm on weekdays will not ship until the next business day. Orders placed after 12pm Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enter new zip code to refresh estimated delivery time.
The Tamron C-Mount 4 to 12mm Varifocal Manual Iris Lens is a varifocal lens which features a 4 to 12mm adjustable focal length. Compatible with cameras using a 1/2" imager size and C-mount, the lens is designed to deliver high-quality imagery. With an aperture range of f/1.4 to close, the lens allows for clear images even in low light conditions. The lens surface is multi-coated for lessening ghosting and flare in backlit conditions and eliminates constructional problems such as lopsided blur and focal point image degradation. The integrated slip-mount mechanism allows you to fine-tune the position after mounting the camera to set the auto-iris meter to a proper position around the lens. With the lock for each control ring (zoom and focus), you can avoid setting displacement after installation.
Suitable for cameras having an imager size of 1/2"
Manual zoom & focus with lock
1.0' / 0.3m focus range
Multi-coating for less ghosting and flare in backlit conditions
Eliminates constructional problems such as lopsided blur and focal point image degradation
Slip-mount mechanism for fine-tuning the position after mounting the camera to set the auto-iris meter to a proper position around the lens
Lock for each control ring (zoom and focus) to avoid setting displacement after installation
Appropriate for security applications where high resolution and/or short-to-medium long-range focal points are required
Environmentally-friendly design - does not use substances that impact the environment in optical glass materials, sealing, and packaging
In the Box
Tamron C-Mount 4 to 12mm Varifocal Manual Iris Lens
Limited 6-Year Warranty
Table of Contents
Show moreShow less
4 to 12mm
1.4 to close
Angle of View
Imager Size 6.8 x 5.1mm 1/2" Wide: 100.5 x 73.4° 1/2" Tele: 33.4 x 25.1°
Imager Size 6.4 x 4.8mm
1/2" Wide: 93.9 x 68.8° 1/2" Tele: 31.4° x 23.6°
1.0' / 0.3 m to ∞
Focus: Manual with Lock Zoom: Manual with Lock Iris: Manual with lock