3.5 to 8.0mm Varifocal Manual Iris Lens. When used with 1/3" traditional style cameras the viewing angle can be adjusted between 35° and 85°, on 1/4" cameras it is 26° and 67°. 1 Year Guarantee Model: HTS-183
2.8 to 12.0mm Varifocal Auto Iris Lens. When used with 1/3" traditional style cameras the viewing angle can be adjusted between 23° and 99°, on 1/4" cameras it is 17° and 75°. 1 Year Guarantee Model: HTS-184
6.0 to 60.0mm Varifocal Auto Iris Lens. When used with 1/3" traditional style cameras the viewing angle can be adjusted between 4° and 43°, on 1/4" cameras it is 3° and 33°. 1 Year Guarantee Model: HTS-185
