The Speed Booster Ultra 0.71x Adapter for Olympus OM-Mount Lens to Micro Four Thirds-Mount Camera does not support electronic communication between an attached camera and lens. 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. 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. 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. 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 Olympus OM-Mount Lens to Micro Four Thirds-Mount Camera condenses the light from a lens designed for 35mm film or "full frame" camera sensors and projects it onto a Micro Four Thirds sensor. If a lens intended for 35mm film or similarly-sized full-frame 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. 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. Then it was just to tighten the three screws and the lens is as good as new.The Speed Booster Ultra 0.71x Adapter for Olympus OM-Mount Lens to Micro Four Thirds-Mount Camera from Metabones allows a Olympus OM-mount lens to be mounted onto a Micro Four Thirds-mount camera. I was acually taking apart the adapter insted of the lens, the last remaining ring from the adapter was just treaded so i usesd some pliers with plastic grip to get this one of. Trond_Eric wrote: I have now solved the problem, it was actually an adapter on the back of the lens from YS screwmount to Olympus OM mount. Trond_Eric wrote: is it possible that i have to take it apart from the front? Here you can see the play in the aperture ring. This is the mount and the next ring removed Nodal Ninja 4, Neewer leveling tripod base SonicScot wrote: I would imagine if you posted some photos of the job so far, you may get some help.
![disassembling om system lens disassembling om system lens](http://lh5.ggpht.com/_iZxzmL6M8SI/SWDVv1rtb0I/AAAAAAAAGew/SHrsdhVdsEE/DSC02592%20copy.jpg)
Just need to get to the aperture-ring, it has very much play front/back.
![disassembling om system lens disassembling om system lens](http://lh3.ggpht.com/_iZxzmL6M8SI/SWDV1A_2jmI/AAAAAAAAGfo/UkZw_WCLPRY/DSC02599%20copy.jpg)
I tried to open this lens from the back, I removed the mount easily, but can't get anything else off.
![disassembling om system lens disassembling om system lens](https://lh3.ggpht.com/_iZxzmL6M8SI/SWDVyab9pvI/AAAAAAAAGfI/kk7_EjBGNUM/DSC02595%20copy.jpg)
![disassembling om system lens disassembling om system lens](https://www.lensrentals.com/blog/media/2020/01/4J9A0058sml.jpg)
Trond_Eric wrote: I have a Sun 200mm f3.5 OM-mount witch is loose around the aperture ring so when its mounted to the camera its very wobbly. Posted: Thu 8:58 am Post subject: Help on disassembling Sun 200mm f3.5 OM-mount