Originally posted by jake14mw Thanks again for another great review.
Thanks, much appreciated.
A shout out to Adam who created the framework for publishing reviews like this one and allows me to use it.
Originally posted by jake14mw I do understand that in order to get the remote flash to trigger at all, I will need a HSS capable flash on camera like an AF 360FGZ.
That's correct, if you want to go past 1/180s.
Originally posted by jake14mw Then it sounds like I could use a special mode and set delays in order to get the remote flash to kind of behave like a HSS capable flash.
Yes, BTW, the Cactus RF60 supports the same principle.
You have to active optical triggering and select "trigger on first flash" so that the pre-flash isn't ignored.
You then set a certain delay, around 90ms, if I remember correctly, so that the V6 will trigger the off-camera flashes at the same time the main flash occurs.
Originally posted by jake14mw Would you see this as really being useable for HSS with Pentax? Would the power level be remotely controllable?
Yes, I've done both in my testing.
The one catch is that the precise delay time you need to set depends a little bit on the aperture you are using. Small apertures take a little longer to close down and the main flash will therefore occur a little bit later.
As a result, you cannot just set one delay value and then never think about it again, but may need to adjust it depending on the aperture value. I haven't tested this aspect extensively so I haven't worked out the range of timing delays required. It definitely won't be a large range as the timing differences aren't big and you also have a bit of latitude, i.e., the timing does not have to be 100.0% accurate to light the entire frame and often a bit of banding at the top or bottom goes unnoticed (say when the top is just sky).
Don't forget that your remote flashes either need to fire at 1/1 in which case the flash pulse will be long enough to fill the frame, or need a way to manually activate HSS for lower power levels. The RF60 can do the latter; there may be more flash models with this ability, but I don't know any.
I hope that clarifies the use of HSS.
Should I extend that part of the review a bit?