Specifications:
The lens model YV2.8x2.8SR4A-SA2 features a focal length range of 2.8 to 8 mm with a zoom factor of 2.8x. The iris range is F1.3 to T360, with an auto iris (DC type) operation. The lens supports manual zoom and focus.

Angle of View:
For a 1/2.7" sensor, the wide angle is 112°33' × 81°21' and telephoto is 38°53' × 29°08'. For a 1/3" sensor, the wide angle is 100°34' × 73°22' and telephoto is 35°16' × 26°26'. For a 1/4" sensor, the wide angle is 73°22' × 54°18' and telephoto is 26°26' × 19°49'.

Aspect Ratio 16:9:
For a 1/2.7" sensor, the wide angle is 125°6' × 65°35' and telephoto is 42°23' × 23°47'. For a 1/3" sensor, the wide angle is 111°8' × 59°19' and telephoto is 38°27' × 21°35'. For a 1/4" sensor, the wide angle is 80°23' × 44°13' and telephoto is 28°47' × 16°13'.

Focusing Range:
The focusing range from the front of the lens is 0.3 meters.

Object Dimensions at Minimum Object Distance (M.O.D.):
For a 1/2.7" sensor, wide dimensions are 917 × 525 mm and telephoto dimensions are 226 × 166 mm. For a 1/3" sensor, wide dimensions are 737 × 455 mm and telephoto dimensions are 204 × 151 mm. For a 1/4" sensor, wide dimensions are 456 × 314 mm and telephoto dimensions are 151 × 112 mm.

Back Focal Distance and Exit Pupil Position:
The back focal distance is 8.49 mm, and the exit pupil position is 217 mm from the image plane.

Mount and Mass:
The lens uses a CS mount and weighs 60 grams.

Electrical Specifications:
Coil resistance is 190 for the drive coil and 500 for the damping coil. Maximum current consumption is 23mA at DC 4V.

Additional Features:
The lens includes a metal mount, is RoHS compliant, and is suitable for security applications. It features a large aperture ratio and an ND filter. The long cable type is 230 mm.

Connector:
The lens uses a 4-pin plug connector with specific wiring for the drive and damping coils.