Originally posted by Aleighn8 This is good information! I am thinking about getting two of the Yongnuo 585EX flashes for off-camera use. I already have a Metz 64-AF1 that I use on my K3 occasionally. I want to find something that can trigger the Metz and the Yongnuo flashes. Will the Catctus trigger products work with both? I've also been looking at the YN560-TX as a trigger. I don't see a Pentax option for that trigger, though. Suggestions or advice would be greatly appreciated.
The Yongnuo YN585EX is a dependable, sturdy, well styled flash. It would be a good decision to get a couple of them for lighting. I would recommend the Cactus V5 transceivers (radio triggers), which I have. They will fire the YN585EX and Metz flashes. The YN585EX does not have HSS, my three Pentax AF360FGZ flashes do, but I rarely use it. I use my YN585EX along with my AF360FGZ flashes as a group for multiple light sources and the combination works great. The YN585EX also does an excellent job alone. It performs with excellent results in P-TTL (Pentax Through The Lens metering) mode, where it meters the light output automatically, or Manual mode where the user has full control over output. I don't know if you know this already, but in some conditions, such as in an indoor studio, the use of a low ISO, higher F stop number, or a combination of both, will get rid of ambient light while using flash for freezing motion at shutter flash sync speeds of something similar to 180 or below. Those conditions may also be created in well lit areas by using an ND filter, which will help darken the ambient light.
So, as I said, I would recommend the Cactus V5 triggers, or later model Cactus triggers, and also the YN585EX flash. You can create groups (flash triggering selections) with the V5, just in case you were interested in having that control. I have six V5 units.