Originally posted by ultraviolet For the benefit of those who are new here: with notably rare exceptions* ALL K-MOUNT LENSES will work just fine with the K-3.
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(1) Some old Ricoh K-mount lenses will get stuck because of the "Ricoh pin" that was used to transmit aperture info to the body. Ah, the irony.
(2) Some old third-party K-mount lenses have a shroud intended to protect the aperture lever that bumps into the SDM contacts and prevents the lens from mounting. This shroud can be removed.
(3) Old manual focus K-mount lenses will remain manual focus.
(4) Old manual aperture K-mount lenses will remain manual aperture.
Did I forget anything?