※Please be sure to read the profile. Purchase constitutes agreement with the profile contents※ This item is not subject to discounts. Comments requesting discounts will be deleted. This is a K&F mount adapter, well-known among vintage lens enthusiasts. It allows the use of Canon EF mount lenses (for SLR cameras) on Sony NEX E mount cameras. For manual lenses like Samyang, focus and aperture can be adjusted, but with Canon EF lenses, the aperture cannot be adjusted because it's electronically controlled. Also, some lenses may not allow focus adjustment. Since there are no electronic contacts, focus and exposure must be manually controlled. The inside of the mount adapter is not treated for internal reflection. Infinity focus is supported. This is a new item. The original plastic storage case is not included. Please note that it will be opened before shipping to check for initial defects and to test the lens and camera compatibility. A new lens cloth (15x15CM) will be included as a bonus. The mount adapter is not a genuine manufacturer's product. Please research thoroughly before purchasing, as some lenses may not be compatible. If you have any questions, please contact me via the comments section. Free shipping via Yu-Packet Post Mini. No plastic storage case is included. It will be wrapped in bubble wrap and shipped in a Yu-Packet Post Mini envelope. Same-day shipping is generally not possible. Shipping is also unavailable on weekends, holidays, and festivals. Please allow ample time for delivery when purchasing.