Opteka 12mm f/2.8 HD MC Manual Focus Wide Angle Lens for Micro Four Thirds Mount

Wide-Angle 12mm for Micro Four Thirds

The Opteka 12mm f/2.8 is a manual-focus wide-angle lens built for Micro Four Thirds cameras. It gives photographers a 99-degree diagonal view equivalent to 24mm on the format. The all-metal barrel and clickless aperture ring suit shooters who want tactile control over exposure and focus. It is not for users who require autofocus or electronic aperture coupling.

f/2.8 to f/22 range with deep focus at f/5.6

The maximum aperture of f/2.8 provides decent low-light capability while the minimum stops down to f/22 for extended depth of field. At f/5.6 everything from 1.4 feet to infinity falls in focus, useful for zone focusing in street or architectural work. Close focus stops at 3.9 inches (9.9 cm), limiting extreme macro work. The 9-blade diaphragm renders soft backgrounds when shooting wide open.

72mm filter thread and 12-element optical design

The lens uses 12 elements in 10 groups including one super-low dispersion element to curb chromatic aberration. HD anti-reflective coating reduces flare and ghosting in high-contrast scenes. A 72mm front thread accepts standard filters without vignetting at this focal length. The ridged metal focus ring and clickless aperture ring operate smoothly, while the lightweight 13.4 oz body balances well on compact Micro Four Thirds bodies.