Pentax -D - Manual (Page 10)

8
Camera / Lens Mount Compatibility
Pentax camera/lens mount compatibility chart is shown below.
K
AF2
-mount
which is equipped with
° Power contacts
° AF coupler
° Lens information contacts
K
AF
-mount
which is equipped with
° AF coupler
° Lens information contacts
K
A
-mount
which is equipped with
° Lens information contacts
K-mount
(base mount)