Last week Ricoh released firmware updates for the Pentax K-S1, K-S2, K-3 II and K-1 cameras that bring compatibility with thew new KAF4 lens mount (electromagnetic diaphragm control system): Corresponded to [KAF4 lens mount] that is equipped with an electromagnetic diaphragm control system. Enable new lens HD PENTAX-DA 55-300mmF4.5-6.3ED PLM WR RE to shoot stable … Continue reading Ricoh released firmware updates for the Pentax K-S1, K-S2, K-3 II and K-1 cameras