I have owned the 645D and currently own the 645Z they both had / have the same problem. The cameras simply freeze up in the middle of a shoot, the conditions don't matter. I have had both cameras serviced by Precision camera as directed by Pentax to no avail. On top of being a couple of the most frustrating pointless experiences I have had when it comes to needing camera repair. Precision supposedly sent both cameras to Japan when they were not able to correct the problem. After months of waiting to get the cameras back only to find both cameras continue to have the same problems well what can you do. If Pentax / Ricoh is aware of this issue and I can't help but think they are they have not addressed the problem in the last several years. To say I am disappointed is an understatement. It's no fun being in the middle of a shoot only to loose a shot at a critical time due to this problem. Does the camera take good images yes is it reliable..............
Last edited by Whats_edoo; 04-24-2017 at 01:36 PM.