Concept Lens Mount Adapter Pentax K Mount Lenses To Canon EF for Use K&F KF-PKEF (Converts Mount) Not Full-frame

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Model: KF-PKEF Japanese genuine product. Features: Mount conversion, *Cannot be used with full-size cameras Compatible lens mount: Pentax K mount. Compatible camera mount: Canon│EF mount This cannot be used with full-size cameras as it will interfere with the mirror that pops up when the shutter is released. [How to attach a lens] Attach the lens to the mount adapter while pressing the lens lock leaf spring on the inside of the camera mount side of the mount adapter outward. Once attached, turn the lens clockwise to lock it. If the lens does not lock properly when attached, you can adjust the lens lock leaf spring by bending it inward to make it easier to lock. [How to remove the lens] Just like when attaching the lens, you can remove the lens by pressing the lens lock leaf spring outward and turning the lens counterclockwise. If the lens mount and the lens lock leaf spring interfere with each other and you cannot remove the lens, turn the lens clockwise once to remove it.