Lens Adjustment (Optical Vari-Focal Lens) - Vista VK2-540VRD User Manual

3.5.2 Lens Adjustment (Optical Vari-focal Lens)

Field of view: Adjust setting from Telephoto (T) to wide (W) field of view.
Focus: Adjust lens focus from near (N) to infinity (∞).
DC Auto IRIS Lens
Lens Type
Image Size
Focal Length 2.6~6mm±5%
Aperture
1 : 1.6 ± 5%
Ratio
Angular
2.6mm: 134.6
Field of View
6.0mm: 59.2
2.6 ~ 6mm 4 ~ 9mm
1/3" CCD 1/3" CCD
4~9mm±5%
1 : 1.6 ± 5%
DIAGONAL DIAGONAL
◦
4.0mm: 92.4
◦
9.0mm: 39.2
2.8 ~ 12mm
1/3" CCD
2.8~12mm±5%
1 : 1.4 ± 5%
◦
2.8mm: 119.9
◦
12mm: 28.8
24
6 ~ 50mm
1/3" CCD
6.0~50mm±5%
1 : 1.6 ± 5%
DIAGONAL
◦ ◦
6.0mm: 58.6
◦ ◦
50mm: 7.1