This is a large-aperture, single-focus lens for M42 screw mount. (K-mount is selected because the appropriate size is not available) You can enjoy it with film cameras or digital SLR cameras via an adapter as an old lens. *If you are using it with RF mount, a complete set of adapters is available, so please consult in the comments. We will make it cheaper with a set sale. ◎Appearance There are scratches overall. Please understand that this is a used item. Please check the details in the photos. ◎Function There is no stickiness in the aperture blades, and the knobs rotate smoothly, with no functional problems. ◎Optical System There is a slight amount of dust, but no mold or cloudiness, and it looks clear. ◎Actual Shooting Confirmation I was able to take pictures without any particular problems in actual shooting with a single-lens reflex camera via an adapter. ◎Accessories Comes with front and rear caps. Shipping is free, and you can purchase immediately without comments. Full-size support...Full-size compatible Aperture...Less than 1.5 to 2.0 Focal length...Less than 18mm to 70mm Focal length...19～70mm Other features...With front lens cap, with rear lens cap, old lens takumar Aperture...～1.4 Other features...Old lens