The Ever Focus EFV-515 is a high quality industrial lens for 1/3-inch CCD security cameras that have a CS-type lens mount. This lens offers a fast aperture of f/1.7 good for low lighting situations. Its iris and focus functions both operate manually.
Wide Angle of View
At its widest setting 5 mm the EFV550 renders a wide 51° horizontal angle of view. At its telephoto longest setting 15 mm the lens shows a tight 5.5° horizontal view.
This varifocal lens can be set to display wide or medium angles of view. Its focal length is set manually. Focus and iris settings are manually set also.