※Please be sure to read the profile. Purchase constitutes agreement with the profile contents.※ This item is not subject to price reduction. Comments requesting price reductions will be deleted. This is a K&F mount adapter, well-known among old lens enthusiasts. It allows the use of Pentax K-mount lenses (old lenses) on Canon EOS M-mount cameras. DA lenses, which do not have an aperture ring, cannot have their aperture adjusted. Since there are no electronic contacts, focus, exposure, etc., must all be manually operated. The inside of the mount adapter is not treated for internal reflection. Infinity focus is supported. This is a new item. The originally included 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 attachment. A new lens cloth (15x15CM) will be included as a bonus. The mount adapter is not a genuine product of the manufacturer. Please research thoroughly before purchasing, as there may be lenses that are not compatible. If you have any questions, please contact us via the comments section. Free shipping, shipped via Yu-Packet Post Mini. No plastic case for storage 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 not available on weekends, holidays, and national holidays. Please purchase with ample time for arrival.