Well, I'm more concerned with the high-speed sync capabilities not so much the TTL since I'm going to be using them as studio lights.
I realize TTL probably wont work with the cactus V6II's using the 600exrt.
What I'm trying to find out is if I have 3 Cactus V6II's using the HSS firmware. One on my camera, one using my Pentax HSS flash and one using the 600EXRT II HSS flash. Would I be able to use HSS with both flashes at the same time?
They work on thier own but I don't know if there will an issue mixing brands.
---------- Post added 02-16-18 at 02:42 PM ----------
Originally posted by mcgregni Yes, the older RF60 can take the new firmware, offering the full range of (Pentax compatible) X-TTL features. All that's missing from what the RF60X does is AF Assist and the cooling feature, as far as I remember. I have an RF60 and an RF60X flash controlled by a V6II, and they both work excellently in TTL mode with very exact control.
That's interesting! RF60s can be had for about $130 used and I could care less about the AF assist and cooling.