Lenses

A lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, converging or diverging the beam.  Lenses in security camera systems are divided into many categories like varifocal lenses, fixed lenses, auto iris lenses, manual iris lenses, zoom lenses, and megapixel lenses.
     
  Vari-Focal Manual
Iris Lenses
  Vari-Focal Auto
Iris Lenses
 
 
         
   

Zoom Lenses

  Arecont Lenses