Reliability is ensured by the employment of highly reliable iris meters and diaphragm mechanisms.
Each lens is IR-compatible to allow surveillance not only in daytime but also at night.
Differences between visible light lenses and infrared lenses
Visible light lens
Since light dispersion is large due to differences in wavelengths, the positions of focal planes for light in infrared and visible light ranges differ.
This difference in focal planes causes image blur.
Infrared lens
With Tamron IR lenses, focal planes for the visible and infrared light ranges are almost the same,
which means that the surveillance camera can deliver sharp images in both day and night applications.
