If you have a SLR or DSLR camera and other maker/mount lenses, the Fotodiox Mount Adapters allow you to use your lenses on the film/digital camera body. Sharing lenses has some distinct advantages. Certain prime lens just can't be replaced, and you save the cost of purchase on new lenses. Fotodiox offers a range of adapter from large format to smaller format digital adapters. Adapting larger format lens to smaller format sensors (i.e: large format to medium format, medium format to 35mm, 35mm to micro 4/3) provides excellent edge-to-edge sharpness. The smaller image field helps minimize the effects of lens distortion and aberration by using the 'sweet spot' or center of the larger lens image circle.This Fotodiox lens mount adapter is made with high standard precision. The leaf spring design in the adapter holds the lens tight to the camera body ensuring there is no play between the camera and the lens. This adapter allows all Contax/Yashica lenses to fit on a Pentax K SLR/DSLR camera body.Compatible Cameras (including, but not limited to): Pentax K Mount bodies K-7, K-x, K-r, K-5, K-01, K-30, K-5II, K-5IIs, K-500, K-50, K-3, K-S1Actual product packaging and contents may differ from image shown due to packaging or product updates by manufacturer.