Opteka 85mm F1.8 Specifications

Compatibility:

analog/digital limited (dumb mount - aperture priority or manual modes only)

Diagonal Angle of View:

28.5°

Maximum Magnification:

Minimum Aperture:

F22

Number of Aperture Blades:

Iris Pattern:

polygonal

Minimum Distance:

85cm

Filter Thread:

55mm

Maximum Diameter:

63.5mm

Length:

70mm

Weight:

380g

Focus Type:

internal focus mechanism, manual focus only

Lens Hood:

thread mounted, round shape

Produced:

2013 (?)

Tests:

Additional Information:

The lens is reported to be of rather cheap quality (chromatic abberation/purple fringe, bad bokeh and stuck apertures after few times in use). Its release was accompanied by crazy marketing stories. Aperture settings are limited to 2.5, 3.2, 4.0, 5.0, 7.0, 11.0 and 22.0 (nothing in between).

The origin (OEM) of this lens is unknown. So far rebadges have also been released by Kauser (Kelda by Kaili) and Vivitar.