Originally posted by panoguy Metz 48 AF-1 (which isn't on the list)
This one does not have Auto mode.
That means it can only work in M mode if the setup includes a lens older than PKA mount. In other words, if the lens has an aperture ring and the aperture ring does not have "A" setting, you can use the flash only in M mode.
You will need to adjust the lens's aperture and the camera's ISO setting depending on the distance from camera to subject - not impossible, but clumsy.
It does have manual variable output settings, but is still not optimal in fast shooting condition.
Same thing applies if you use the flash on a camera that is not Pentax.
I'd rather buy a flash with Auto mode and no P-TTL mode, than a flash with P-TTL mode and no Auto mode.