Ricoh released firmware update version 1.21 for the Pentax K-3 Mark III camera with some stability improvements: K-3 Mark III Firmware (Version 1.21) Update A new Firmware (Version 1.21) for the PENTAX K-3 Mark III has just been released. Contents: Improved stability for general performance. Note: This Firmware update includes the contents and changes from all previous … Continue reading Pentax K-3 Mark III firmware update version 1.21 released