p.1 #1 · Flash output loss between Godox AD600, AD360II, and H600 remote head
Hey guys, just wanted to share this video I did that compares the flash outputs of the Godox AD360II, AD600, and H600 remote head. I know a lot of people are moving to the Godox gear, which I have a lot of info and comparisons on.
p.1 #2 · Flash output loss between Godox AD600, AD360II, and H600 remote head
What is the power loss between 1/250 and HSS @ 1/8000? Actually, it would be cool to see what the power numbers look like as you ramp from standard sync up to HSS 1/8000. My main question HSS or ND better?
p.1 #5 · Flash output loss between Godox AD600, AD360II, and H600 remote head
Here's my boilerplate for ND vs HSS:
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HSS works, but is much less efficient than ND filters because some or most of the flash is wasted on the shutter curtains, not getting to the sensor - so the flash needs to be a lot closer, sometimes too close, to the subject. With ND's, one simply sets the camera to x-sync, sets the flash to "beat the sun" if that is what is desired, then shoots.
A misconception is that the ND makes it harder to beat the sun because it reduces flash. It reduces flash and ambient at the same time, so as long as one can get the flash overpowering the sun at, say, f/11, sticking on an ND just means opening up the aperture to compensate.
I can "beat the sun" with a single bare SB-900, but would more typically use two so they aren't working as hard, have longer range, and recycle more quickly.
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p.1 #6 · Flash output loss between Godox AD600, AD360II, and H600 remote head
Ok. I think I get the idea. Nd reduces ambient/flash 1:1, but increasing shutter reduces flash more than ambient. Therefor HSS you loose ground. That right?
I guess my follow up question is, has anyone actually measured the loss on these Ad600 in HSS mode at various shutter speeds?
p.1 #7 · Flash output loss between Godox AD600, AD360II, and H600 remote head
It's really hard to meter HSS. By shooting and eyeballing the exposure, I went from f/22 at x-sync to f/2.8 at 1/8000th.
That's a pretty loose measure, but I've heard the rule of thumb is 1 stop HSS loss to 1 stop of shutter speed faster than x-sync.
HSS works great for run and gun portraits, lower light portraits (sunsets - hard to see anything with ND filters on when it's already dark everywhere but one direction) and action. The classic ND is better for high-noon, non-action portraits.
p.1 #12 · Flash output loss between Godox AD600, AD360II, and H600 remote head
Mirakaski wrote:
So there seems there has to be a way to accurately measure the effects of HSS on flash power at various shutter speeds above xsync. Anyone?
Maybe you can be the first to figure this out and then give US the numbers! (lol)
p.1 #14 · Flash output loss between Godox AD600, AD360II, and H600 remote head
So is it a problem because the light meter would just measure one pulse? Wouldn't each pulse have the same output the entire duration? In other words, wouldn't measuring the first or last pulse tell you enough?
p.1 #15 · Flash output loss between Godox AD600, AD360II, and H600 remote head
Mirakaski wrote:
So is it a problem because the light meter would just measure one pulse? Wouldn't each pulse have the same output the entire duration? In other words, wouldn't measuring the first or last pulse tell you enough?
Until you understand photographic basics like the exposure triangle, you will not be able to understand many of the answers provided on this forum. There are many free sources as well as video courses for a small monthly fee that will provide you the basic photographic and lighting concepts you need.
Google is your friend, as well as Lynda.com and others. Gaining a basic knowledge of photography and lighting will allow you to ask better questions and become a contributing participant to the discussions. The Strobist Lighting 101 course is also excellent -
p.1 #16 · Flash output loss between Godox AD600, AD360II, and H600 remote head
I've got all that down pat. Thanks. My question is related to HSS metering specifically, which is not a "beginner" question. I have never used HSS before and I don't understand the technical aspects of how a light meter works. Looking for help on that.
Photographic light meters measure analog peaks at a given instant, but do not measure accumulated light for variable durations.
Different speedlights perform "flash pulse" for HSS at different rates. Different strobes have different decay slopes. If I want to measure the average light from a porch light over a 10-second period, I will get one reading if I turn the light on and off once for a second and a different reading turning it on and off for the same duration, 5 times during the 10-second interval.
p.1 #18 · Flash output loss between Godox AD600, AD360II, and H600 remote head
You seem to have missed his point, and acting as though nobody should really answer him seems unhelpful.
I too would have assumed that "microbursts" would have to be at the same output level if using a flash meter, unless there is a diminishing bell curve of reduced power somewhere in there.
p.1 #19 · Flash output loss between Godox AD600, AD360II, and H600 remote head
Wouldn't one solution be to shoot the same subject with HSS at 1/1 power, 1/8000s, and stop down until the exposure is correct...then set to sync speed and shoot the same subject at full power stopped down (and probably a fat non-variable ND filter). Then in post, verify that the exposure is the same and calculate the difference in stops based on the difference in aperture and ND value?
