I collect these triggers and I expect a reasonable, fair, and scientifical test for all of them.
And they arrived.
I am not to intentionally specify which is best but I would like to have many chapters and make marks. As so many debate here about this topic. I think this might help people to make clear understanding rather than by heard on the road method.
CHAPTER 1 TRIGGER BASIC
OK, first things first. Triggers, or radio triggers. No matter how complex they can be, basically, they are used the fire the flash as quick as possible as the camera tells it to do. for normal sync speed. for example, Pentax 1/200 second max. and Nikon 1/320 second.
At the right beginning, the front curtain of the shutter open, the CCD is exposed to light. the flash fire, have the light reflected to the CCD. this last 1/320 = 3125 uS for Nikon and shutter speed 1/320. and CCD exposed last for this long time. the rear curtain close the exposure.
So it is clear, if the flash fire after 3125 uS from the first curtain open. I would not give light to CCD.
The radio delay, Should come from the electronic circuit. circuit processing need time to be done. I call this as
speed of radio trigger.or trigger delay and this figure show the delay data for each of these 3 triggers.
From the above, We learn that, third party RADIO trig isn't an ideal tech. for it simply have the delay. while a wire or ottical would make no delay.
this make effect when shotting moving object, it is impossible to mimic a wire or optical trigger.
Though, How it matter the camera processing isn't known.
The delay should be as short as possible. I give 4 star for R930, 3 for X1N, and 2 for V6II.
CHAPTER 2 Manual Fire
All 3 triggers are able to set manual flash output. The use similar tech. first, set the flash to TTL-Hss mode., they mimc the TTL to set a power level.
The question arise: is this manual power the REAL manual ? If you exmaine the photo taken, yes the power have been set.
But, further examination make me so suprised, and I classify them in to 2 kinds.
1)
Real Manual. this make exatly the same power like setting the flash to manual mode.
2)
Fake Manual, this introduce some other preflash, this waste power and most worse. impossible to use light meter.
figure 2-1 for fake Manual trigger, firgure 2-2 for real Manual. Set the camera as the parameters suggested by the light meter.
another one:
http://i1.piimg.com/4851/903a437a3f09a26e.jpg
2-1
another one :
http://i1.piimg.com/4851/cca67f84bb5df78f.jpg
2-2
The V6II make fake Manual and R930 make Real.
CHAPTER 3 PTTL Here is the picture taken
https://www.pentaxforums.com/forums/125-flashes-lighting-studio/336313-pttl-v...ml#post3862307 CHAPTER 4 Multi Brand
Multi Brand makes it possible for cross brand usage, Both R930 and V6II claim supporting M.B. But actrually, due to this tech complexity, It seems easily introduce problem. I don't have all models for test, but accoding to the SB600 I have, which supposed to be supported well, It is.
[B][I][U]CHAPTER 5 Support studio flash
Some studio flash use the 3.5mm port to let triggerring. So the all 3 seems to have such function.
UI Radio Optical Mix
Last edited by andy888; 12-31-2016 at 03:37 AM.