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Forum: Flashes, Lighting, and Studio
01-17-2019, 02:23 PM
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I'm not a Pentax shooter, but feel I should point out this review that specifically mentions using an XPro-P with an AD600 Pro:
The Godox XPro-P flash trigger is a "game changer" for Pentax photographers - DIY Photography
The non-Pro versions of the AD600 (AD600, AD600M) both have had firmware updates released that allow them to be also be used with the XPro-P trigger with proper TTL/HSS function and power control when available (the AD600M only does HSS/power control, not TTL).
Godox support for P-TTL is being added at the current time and is not yet complete, and the XPro-P was only released in the fall, so it's early days yet to see many reports on Pentax and Godox. At this time, several pieces are still missing from the system for Pentax users. The only TTL speedlight available is the TT350-P mini-speedlight. The TT350-P's Li-on counterpart (V350) and the TTL full-sized speedlights (TT685 and V860II) have not yet been released in versions with a Pentax foot. There is no add-on receiver (X1R) unit for Pentax, yet (so you cannot use P-TTL legacy speedlights). There is no Pentax version of the X1T transmitter with a passthrough hotshoe. And the firmware updates for the TT685 and AD360II to perform P-TTL/HSS have not yet been released.
Trigger stacking would be the only way, but if Cactus currently isn't allowing for that, then probably not.
And, as I said, at this time, you can't yet replace a Metz speedlight with a TT685-P or V860II-P if you want a TTL/HSS on and off-camera speedlight. If, however, you only need HSS with an off-camera speedlight, the US$65 Godox TT600 can currently do HSS and remote power control over radio with an XPro-P. And the non-P versions of the V860II (US$180) can be firmware updated to be P-TTL/HSS/remote power slaves to an XPro-P. But they won't be TTL/HSS on-camera.
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