The focus of the PTZOptics cameras can go out over time or with a firmware upgrade. This should be completely fixable and only takes a few minutes per unit to fix.
You will need a network connection for this to work. Please be sure you are on the latest version of the firmware before trying to fix the focus of your unit.
In an effort to make this process easier, we have made a windows application to do this calibration over the network which can be found HERE. The link to it on our webpage is below as well. If you still have issues please feel free to contact Support.
Support can be reached M-F 8AM-6PM EST.