The micro four thirds mirrorless camerafrom micro four thirds mirrorless cameraallows a full-frame or APS-C Nikon F-mount lens to be mounted onto a Micro Four Thirds-mount camera. While doing so, the adapter's optics help to maximize the connected lens's apparent angle of view while providing a 1-stop increase for the camera over the lens's aperture range.

If a lens intended for 35mm film or similarly sized full frame as well as APS-C camera sensors is connected to a camera with a Micro Four Thirds-sized sensor, it would project an image larger than the Micro Four Thirds sensor was built to accept. Able to capture only the center portion of the projected image, the effective angle of view of the lens would be narrowed, creating an in-camera "crop factor." The Speed Booster Ultra 0.71x Adapter for Nikon G Lens to Micro Four Thirds-Mount Camera condenses the light from a lens designed for APS-C as well as 35mm film, or "full frame" camera sensors and projects it onto a Micro Four Thirds sensor. This allows a Micro Four Thirds sensor to utilize more of the light gathered by a connected lens, which effectively reduces the crop factor while making available to the sensor an additional 1 stop of light for each of the lens's f/stop settings.

This adapter is constructed from aluminum alloy for durability while minimizing weight and its mounting rings are made with brass to further prevent wear-and-tear. Inside are five lens elements in four groups that are designed to provide optical clarity as well as color fidelity, and a detachable tripod foot is included that features 1/4"-20 threads as well as compatibility with Arca-Swiss tripod heads.

The Speed Booster Ultra 0.71x Adapter for Nikon G Lens to Micro Four Thirds-Mount Camera does not support electronic communication between an attached camera and lens. To help determine the amount of light that enters a Micro Four Thirds-mount camera when using this adapter and a Nikon F-mount lens, an aperture dial is built into the Speed Booster Ultra 0.71x Adapter for Nikon G Lens to Micro Four Thirds-Mount Camera. The aperture dial is designed to provide aperture control for Nikon G-type lenses, which do not have an aperture ring. Nikon AI or many post-Nikon AI lenses can have their aperture settings widened or narrowed using their built-in aperture control rings if preferred.

Nikon F Lens to Micro 4/3 Body    Full-Frame Lens to Micro 4/3 Camera Body    APS-C Lens to Micro 4/3 Body    0.71x Micro 4/3 Crop Factor Compensation    1-Stop Increase in Lens Apertures    5 Optical Elements in 4 Groups    Locking Mechanism to Secure Lens    Push-Button Lens Release    Brass Mounting Rings    Detachable Tripod Foot

• Allows a full-frame AI or post-AI as well as an APS-C Nikon-F mount lens to be used with a Micro Four Thirds-mount camera
• Maximizes apparent angle of view of combined camera and lens
• Provides a 1-stop increase for the camera over the lens's aperture range
• Five lens elements in four groups for optical clarity as well as color fidelity
• Detachable, Arca-Swiss compatible tripod foot with 3/8" threads
• Aluminum alloy components for weight reduction
• Brass mounting rings prevent wear-and-tear
• Locking mechanism for secure attachment of lens with push-button release

Related Questions and Answers

Q: 1. Will this fit a Olympus OMD5 Mark II camera?

A: Yes, this will fit on your Olympus OM-D 5mk II camera.

Q: 2. does this adapter change the focal length of the lens used?

A: It doesn't change focal length. Just allows four thirds lenses to work on Micro four thirds cameras. Some lenses however, focus better than others with this adapter and I wouldn't recommend attaching heavy lenses to it.

Q: 3. Hello , Please advice if this can be used with JVC GY-LS300 camera ?

A: I only tested it on my BlackMagic Studio camera, and worked very nice. I have no idea on how it performs on other kind of camera. I'm not an expert

Q: 4. Hi, can this be used with a Olympus Zuiko 18-180 lens on a Lumix DC-G95DM

A: Yes, you can use Olympus's Four Thirds lens on the Lumix camera body with this adapter.

Q: 5. What is the outer diameter at the t-mount end of this adapter?

A: Mine is 54.7mm, just shy of 55mm. I just measured it with calipers.

Q: 6. Hello. Will this adapter work with the Black Magic Design Studio Camera HD 2? I would like to use an older Fujinon 2/3 16:9 SD/HD lens with that camera.

A: You can attach a B4 lens to the Black Magic Design Studio Camera HD with this adapter. However, you can only use a lens that has a 2x extender and it is engaged at all times. Otherwise the the lens will not make an image big enough to cover the sensor.

Q: 7. Will this work on older 4/3 Olympus lenses that fit the Olympus E-1? (I know is a dinosaur)

A: Yes, the Vello Auto Lens Adapter - Four Thirds Lens to Micro Four Thirds Camera works with the older mount lenses that are 4/3rd to cameras that are Micro 4/3rd cameras.

Q: 8. shall I use it for c-mount camera to MFT Lens?

A: FotodioX Mount Adapter for C-Mount Lens to Micro Four Thirds Camera won't work in that situations. This adapter is made for C mount lens to Micro Four Thirds camera.

Q: 9. image stabilization work with this ?

A: Yes, image stabilization will work with this adapter.

Q: 10. Doe this adapter interfere with the camera body contacts? My early no-name adapter works on my Oly E-PL1 but not my Oly OM-D EM5

A: The FotodioX Mount Adapter for C-Mount Lens to Micro Four Thirds Camera will block the camera's contacts, preventing communication between the lens and the camera. However since most C-mount lenses do not support auto focus or have image stabilization the lack of camera to lens communication should not be a big issue.