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Opteka

Opteka 12mm f/2.8 HD MC Wide Angle Lens Micro Four Thirds

SKU CH-QTX2-N1JSR

Manual-focus 12 mm wide-angle lens for Micro Four Thirds with f/2.8 aperture, 99° view, 12 elements in 10 groups and 72 mm filter thread

  • TypeWide Angle Lens
  • ColorBlack
  • Diameter72mm
  • CompatibilityMicro Four Thirds System
  • Focus TypeManual Focus
  • Focal Length12 mm
  • Ultra-wide 99° view captures expansive scenes
  • Bright f/2.8 aperture excels in low light
  • Manual focus ring gives precise control
  • 12 elements in 10 groups reduce aberrations
  • Lightweight 13.4 oz metal body travels easily

Wide-angle lens for Micro Four Thirds

The Opteka 12mm f/2.8 is a manual-focus prime lens built for the Micro Four Thirds mount. Its 12mm focal length delivers a 99-degree diagonal angle of view, equivalent to 24mm on the format. The 12-element, 10-group optical design includes one super-low dispersion element to control aberrations. Photographers who prefer tactile control over focus and aperture will appreciate the dedicated rings.

Upgrading from kit zooms or slower primes

This lens replaces variable-aperture zooms that dim at the wide end or slower primes that limit low-light work. The constant f/2.8 maximum aperture gathers significantly more light at 12mm than typical kit lenses at the same focal length. The jump is worth it when you need a wider field of view with consistent brightness across the frame. The minimum focus distance of 3.9 inches allows close-up perspectives unavailable with many zooms.

Sustained use in bright or contrasty scenes

HD multi-coating suppresses flare and ghosting when shooting toward light sources during extended sessions. The all-metal barrel and 9-blade diaphragm maintain consistent aperture operation without overheating or mechanical drift. Manual focus and aperture rings stay smooth during repeated adjustments for video or time-lapse work. The 72mm filter thread accepts standard screw-in filters for long-exposure or polarising needs.

Highlights

  • Ultra-wide 99° view captures expansive scenes
  • Bright f/2.8 aperture excels in low light
  • Manual focus ring gives precise control
  • 12 elements in 10 groups reduce aberrations
  • Lightweight 13.4 oz metal body travels easily

Specifications

BrandOpteka
TypeWide Angle Lens
ColorBlack
Diameter72mm
CompatibilityMicro Four Thirds System
Focus TypeManual Focus
Focal Length12 mm
ApertureMaximum: f/2.8 Minimum: f/22
Camera MountMicro Four Thirds
Angle of View99 Degrees
Minimum Focus Distance3.9 in.
Lens Construction12 elements in 10 groups
Filter thread (Diameter)72 mm
AutofocusNo
Weight13.4 oz

Questions about this item

Will the 72 mm filter thread on this Micro Four Thirds lens accept standard screw-in filters?

Yes, the front thread is 72 mm so any 72 mm circular polariser, ND or protective filter will screw on directly.

How do I set the aperture on this manual-focus lens, and what mistake do beginners make?

Turn the click-stop aperture ring on the barrel; the common error is leaving the ring unlocked so it shifts during handling.

When should I replace the front element coating if flare appears?

The HD anti-reflective coating is permanent; clean with a microfibre cloth instead of expecting a replaceable layer.

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