37-140 mm F3,5 Foton

lens housing parts

Variator and compensator components.

the rear optical block

aperture module.

Foton zoom lens collimating.

The test picture of Foton zoom lens with difference position of glass components.

Can see a sharpness of central line.

The result of collimator test after collimating of flange focal distance focus point coincidence.

Zoom = 37 mm

zoom = 40 mm

zoom = 50 mm

zoom = 60 mm

zoom = 75 mm

zoom = 100 mm

zoom = 125 mm

zoom = 140 mm

The result of " Point" test

zoom = 37 mm

zoom = 50 mm

zoom = 75 mm

zoom = 125 mm

zoom = 140 mm