Olympus 2X MC-20 M.Zuiko Teleconverter for Select Pro MFT (Micro Four Thirds) Lenses

Olympus MC-20: 2x teleconverter built for Micro Four Thirds reach

The MC-20 doubles the apparent focal length of compatible Olympus Pro Micro Four Thirds lenses through a 6-element optical construction, with full electronic communication maintained between lens and camera body. That last point matters: autofocus, image stabilization, and EXIF data all pass through as if the teleconverter weren't there. Pair it with a 300mm f/4 Pro lens and you're shooting at an effective 600mm equivalent on a Micro Four Thirds sensor, serious reach in a package that adds minimal bulk to your kit.

Compatibility is limited to select Olympus Pro lenses, so check that list before committing. Within that ecosystem, the MC-20 is a considered choice over carrying a second long lens. The 6-element design prioritizes optical quality where teleconverters typically compromise it most, at the edges and in lower contrast situations. For photographers already invested in the Olympus Pro lens lineup, this is a logical extension of what those lenses can do.

Who It's For

Wildlife and bird photographers working the Micro Four Thirds system will get the most from the MC-20, since doubling focal length on a long Pro prime turns an already-capable telephoto into a legitimate option for distant or skittish subjects. Sports shooters at outdoor events benefit from the retained electronic communication, keeping autofocus responsive without manually reconfiguring camera settings. Travel photographers who want long reach without checking a second bag will appreciate that the size penalty is minimal. Any Olympus Pro lens owner shooting subjects that demand more distance than their current glass provides has a direct use case here.

Key Features

• 2x magnification factor extends compatible lens focal lengths
• 6-element optical construction optimized for edge-to-edge performance
• Full autofocus and image stabilization pass through to camera body
• Electronic communication maintains EXIF data and camera controls
• Micro Four Thirds mount compatible with select Olympus Pro lenses
• Minimal weight and bulk addition to telephoto lens kit

FAQ

Which Olympus lenses work with the MC-20?

Only select Olympus Pro Micro Four Thirds lenses are compatible. Check the official compatibility list before pairing - not all M.Zuiko lenses will work with this teleconverter.

Does autofocus still work when using the MC-20?

Yes. Full electronic communication passes between the lens, teleconverter, and camera body, so autofocus, image stabilization, and EXIF data function normally.

What's the effective focal length if I use this with a 300mm lens?

A 300mm f/4 Pro lens becomes 600mm equivalent on a Micro Four Thirds sensor. The 2x magnification factor doubles the apparent focal length of any compatible lens.

Does the MC-20 reduce the maximum aperture of my lens?

Yes, like all teleconverters, the MC-20 costs light. Expect approximately a 2-stop reduction in maximum aperture - a 300mm f/4 effectively becomes f/8 when used with this converter.

How does optical quality compare to using a standalone longer lens?

The 6-element design performs better at the edges and in lower-contrast situations than typical teleconverters, but no teleconverter matches the optical performance of a dedicated long lens. If maximum sharpness is critical, a native Pro lens is still the better choice.

Will this converter add significant weight to my kit?

No. The MC-20 adds minimal bulk and weight compared to carrying a second telephoto lens, making it a practical solution for extending your reach without packing more glass.

Can I stack the MC-20 with other converters or extenders?

Stacking converters generally degrades optical quality and disrupts autofocus reliability. Use the MC-20 alone.