I bought this lens in 1973 while I was in Vietnam and only used it a couple times. It is not considered Digital Compatible it is for 35mm Film cameras. It has a manual aperture. It has the Pentax Screw Mount. T-Mounts are available for around $20.00 and this lens can be adapted to most brands of cameras and will work on digital but requires checking digital pictures and aperture changes for best pictures. The lens was made in Japan. Case is included Location: Great Falls it's NOT ok to contact this poster with services or other commercial interests montana