I'm a mostly (as in 99%) very happy recent (last two months or so) owner of a K-3 (having upgraded from a K20D).
Most of my handful of AF lenses seem to work well with the K-3, although I did quickly apply AF Fine Adjustment settings to some lenses that did not focus very well).
However, I have more recently tried applying a corrective setting for a Tokina lens, and, while the setting, once made, does persist (in the sense that the K-3 "remembers" the setting), the setting itself seems to have absolutely zero effect on the actual focus plane when using the Tokina -- that is, the lens still back focuses by the same amount, regardless of what setting I (try to) apply to the lens in the K-3.
So, should the K-3 be able to change the "focus bias" of all the various and sundry third-party lenses? Or, does it require that the lens be of a recent design?, Or, must it be a Pentax lens only? Or...? ["Inquiring minds (at least this one) want to know."] Thanks for any feedback offered.
Last edited by fwcetus; 08-17-2015 at 12:55 PM.