Holga HLP-1 accessory lens for Pentax DSLR cameras. 60mm f/8 fixed aperture. Will not mount to Pentax K mount 35mm SLRs. An unusual lens in that it has an optical lens but it is almost a pinhole lens as well. If you look at the photos you can see the tiny aperture on the back side of the lens. Tested on a Pentax K200 DSLR. The focusing barrel turns easily. The "Glass" (if that's what it is) is clear with no fungus. If you want to get that Old Timey look this is a good lens for you