Tamron 12VM412ASIR 1/2" 4-12mm F/1.2 Infrared Manual C-Mount Lens

BH #TA41212ML • MFR #12VM412ASIR
Tamron 12VM412ASIR 1/2" 4-12mm F/1.2 Infrared Manual C-Mount Lens
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Ezra K., B&H Surveillance Expert

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Tamron 12VM412ASIR Overview

  • 1Description
  • 2IR
  • 3Vari-Focal
  • 4Ring Lock
  • 5Slip Mount

Designed for 24-hour operation the Tamron 12VM412ASIR uses infrared corrected lens elements to produce brighter images in lighting conditions ranging from ambient to totally dark locations and is compatible with both Day/Night and conventional B/W cameras. Using special multi-layer lens coating, this vari-focal lens provides corner-to-corner image quality and compensates for glare and ghosting caused by back-lit environments.


Uses advanced infrared optical elements to produce brighter images in both regular and near total dark conditions and is ideal for use with both Day/Night and conventional B/W cameras.


Uses an advanced aspherical multi-coated lens design to provide vari-focal versatility in near and far image viewing and to boost corner resolution when used with digital cameras.

Ring Lock

Features a focus and iris ring lock mechanism to prevent shifting when used on vibrating equipment.

Slip Mount

Enables lens rotation after camera mounting, allowing an accurate iris reading based on the camera's position.
UPC: 725211921172

Tamron 12VM412ASIR Specs

Lens MountC
Sensor Compatibility1/2"
Focal Length4 to 12mm
Back Focal Length10.157 to 19.911mm
Aperturef/1 to 2
Angle of View1/2" Sensor
Horizontal: 93.6 to 31.2°
Vertical: 68.9 to 23.4°
Focus TypeManual Focus
Iris TypeManual
IR CorrectedYes
Weight0.1 lb / 57.5 g
Packaging Info
Package Weight0.2 lb
Box Dimensions (LxWxH)3.3 x 2.8 x 2.3"
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can I us a 2/3 lense on a 1/3 camera?
Asked by: Anonymous
Yes you can
Answered by: Ezra
Date published: 2020-06-08


Does this lens take infrared picture or normal images? (I have seen review of this lens that takes normal images. is there a non infrared version of the lens?)
Asked by: Anonymous
This lens records both infrared and normal wavelengths of light.Most lenses are not corrected for infrared light.Which means if you set the focus on your lens for normal shooting it will be blurred or out of focus for shooting infrared.If you likewise set the focus for infrared and try and shoot the next day in daylight it will be out of focus again.This because infrared light focuses at different points in the lens than all the other wavelengths of light.What THIS lens does is it keeps you from having to refocus everytime you switch from shooting in normal light to nighttime infrared aided light.This is done using a IR coating to make sure the the wavelengths of light focus on the same point in the lens barrel no matter if its IR or not.Hope that helps anserw your question.23
Answered by: Tiffany F.
Date published: 2018-08-28


what mount adapter would i need to use this on a gh4?
Asked by: edmesper c.
C-Mount to MFTYou can get it on ebay for $10 or less
Answered by: Javier B.
Date published: 2018-08-27


Is this IR Filter lens?
Asked by: Dhananjay Y.
No, it's the opposite -- it lets IR light through rather than filtering it off.
Answered by: Axona L.
Date published: 2018-08-27
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