Question: Is this device compatible with the Sony fx3? Can the touchscreen focus be operated on the external display?
Answer: Yes, the Portkeys PT5 II 5" 4K HDMI touchscreen monitor with 3D LUT support is compatible with the Sony FX3 for image control via HDMI. It accepts a maximum of 4K DCI 24p or 4K UHD 30p via HDMI, so the FX3's HDMI output must be configured accordingly. The PT5 II's touchscreen is solely for controlling monitor functions such as peaking, LUT display, and waveform, and does not enable touch autofocus on the camera. The Sony FX3's touch focus function remains accessible only via the camera's own display.