Description: This is the adapter for using Canon FD manual focus lenses on Pentax auto focus mount.It allows you to use Canon FD mount lenses and macro accessories on Pentax cameras. The lens distance scale can be used as well as the focusing to infinity and the adapter has correction lens inside.It is made of metal,can used for a long time. Feature: Compatible with:For Canon FD Lens for Pentax K Mount Camera for Pentax K-S2 K-S1 K-3 K-50 K-5 II K-30 K-01 K-5 K-r K-x K-7 K-m K20D K200D K10D K100D Package included: 1 x Optical Adapter FD-PK with Glass