OLYMPUS M.ZUIKO DIGITAL 2x TELECONVERTER MC-20 This is a high-performance 2x teleconverter. I'm selling this because I've been shooting more videos handheld and have less opportunity to take still photos with a tripod. Also, I plan to switch my main camera from Micro Four Thirds to full-frame. I took it on photography trips, so I didn't use it often, but there are some small scratches on the exterior. When used with a 150mm, F2.8 lens, it becomes a 300mm with x2 magnification, equivalent to 600mm in full-frame 35mm format (with an F-stop of 5.6). This teleconverter is effective for shooting still objects, wild birds, etc., especially when used with a tripod. Please check the manufacturer's website for compatible lenses. ＜Included Items＞ Dedicated pouch, instruction manual, box Manufacturer's Website https://jp.omsystem.com/product/lens/mc20/index.html Thank you.