Mount: 1/3" Bayonet. This lens has excellent zoom capabilities. However, it's worth noting that there are minor scratches on the mount glass.

Using this Fujinon zoom lens is easy. Just attach it to your device with a 1/3" bayonet mount. When using it, be gentle with the zoom controls to avoid any issues. As for maintenance, keep it in a clean and dry place. If you notice any more scratches or problems, it's a good idea to have it checked by a professional. Also, be careful not to touch the mount glass directly to prevent further scratches.