This is an electronic contact mount adapter made by KIPON. It's for EF lenses on the lens side and Fujifilm FX mount bodies. I am selling this to organize my equipment. I have used it a few times since purchasing it. The exterior is in good condition with no noticeable scratches. The operation, including image stabilization, is good. There was no play felt when attaching it to either the body or the lens. The firmware is the latest EF-FX V1.18. The 9th and 10th photos are sample shots taken with a Fujifilm XT-3 using an EF 24-70mm F2.8L II USM (9th photo) and an EF 16-35mm F4L IS USM (10th photo). Please refer to the manufacturer's website for a list of compatible lenses. My personal impression is that autofocus is fast and accurate with standard zoom and wide-angle zoom lenses, but it sometimes struggles with telephoto zoom lenses depending on the subject. (This might be improved if used with a newer body like the XT-5.) Included accessories are a case and instruction manual. - Brand: KIPON - Product Name: MOUNT ADAPTER - Color: Black - Features: With electronic contacts - Image stabilization compatible - With tripod mount