12MP highdefinition lens with optical distortion 0.1%, providing a clearer field of view. 2Low distortion, high compatibility, can adapt to most industrial cameras. 3The aperture can be fixed and locked with 2.436mm object sight distance, which is more convenient. 4The zoom lens can be used as multiple fixed lenses, thus saving the time of changing lenses. 5You can change the shooting range by changing the focal length, so it is very useful for composition. Item Type:Lens Material: Aluminium Alloy + ABS Lens Construction: Aluminium Alloy + 4 Groups 5 Sheets Optical Multiple:0.12X - 1.8X Zoom Ratio: 15:1Image Format: 1/2IN Resolution: 2MP Mount: C/CS Optical Distortion:-0.1%Working Distance: 55-285mmObject Sight Distance: 2.4-36mmDimension: 39112mm/1.54.4in Relative Illumination: 79%Operation: Zoom, Fixed, Focus, Manual, Iris, Fixed Operating Temperature: -20 - +80 How to Use: Connect the Lens to Industrial Camera or Electron Microscope Lens to Use, You Can Adjust the Magnification to Watch 1 xLens