Product added to cart

4mm - 12mm Focal Length, Varifocal Video Lens

Varifocal Imaging Lenses

Varifocal Imaging Lenses 5mm-50mm FL, Varifocal Video Lens, #55-256 20mm-100mm FL, Varifocal Video Lens, #58-440 1.8mm-3.6mm FL, Varifocal Video Lens, #55-254
Stock #58-365 In Stock
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
Qty 1+
Volume Pricing
Request Quote
Prices shown are exclusive of VAT/local taxes
Get Product Downloads
Field of View @ Min Working Distance (mm):
639 - 168
Length (mm):
Horizontal Field of View, 1/2" Sensor:
93.6° - 31.2°
Maximum Diameter (mm):
Maximum Rear Protrusion (mm):
Varifocal Lens
Focal Length FL (mm):
4.00 - 12
Maximum Sensor Format:
Working Distance (mm):
300 - ∞
Aperture (f/#):
f/1.2 - f/16
Lens Wavelength Range:

Regulatory Compliance

Reach 174:
Certificate of Conformance:

Product Family Description

  • Large Field of View
  • C and CS-Mount Lenses

Varifocal Imaging Lenses provide a flexible solution to applications that previously would have required multiple fixed focal length lenses. Simply adjust through the indicated focal length range for the desired field of view within the specified working distance range, and then set the focus for the best image. Due to the variable focal length range, varifocal lenses are also known as vari-focal, variable-focus, or multi-focal lenses. Varifocal Imaging Lenses can select the focal length within the specified range, like zoom lenses, but unlike a zoom lens, focus adjustment is needed after setting of the focal length. They have a different, simplified optical and mechanical design that is more cost-efficient to produce than zoom lenses. The focal length adjustment is typically a middle or rear assembly of elements that slide back and forth, whereas the separate focus adjustment is typically a front cell movement.

#57-680 is a high-resolution, low-distortion lens for MegaPixel cameras.

Note: CS-mount lenses are not compatible with C-mount cameras.