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Archive 2024A9 III + Godox Flash
p.1 #1A9 III + Godox Flash
After messing some time with the camera and the Godox Pro2 remote I found one very interesting thing... The flash can easily match 60 fps of the camera (I did not push to 120 fps lol) if the trigger is set to the Legacy Hotshoe (dumb) mode, and the camera's trigger pin is always on (Sync Terminal Settings = Always). I tried this on the smallest (AD100) and the second largest (AD1200) flashes - zero misfired shots at 60 fps! The "standard" mode (full electronic communication, legacy = off) allows to shoot around 15 fps or so, even in the 60 fps mode. The camera simply drops its fps.
Long story short - this thing is incredible for outdoor action with strobes. Pretty much any IGBT-controlled flash can sync at any speed and keep up with the camera's fps (fine print: at low power settings). No HSS waste, no ND filters, just pure power.
Long story short - this thing is incredible for outdoor action with strobes. Pretty much any IGBT-controlled flash can sync at any speed and keep up with the camera's fps (fine print: at low power settings). No HSS waste, no ND filters, just pure power.
Feb 01, 2024 at 10:52 PM
p.1 #3A9 III + Godox Flash
I made a few test shots today and wanted to share my experience, and it's a very different experience compared to regular flash photography 
The sun was quite bright and 1/250 minimum ISO required 1/12800s for a decently looking background at f/1.4. I set my AD1200 to 1/256 power to see what I get. I heard and saw the flash firing, but I got nothing in the picture... I raised power to 1/128, 1/64, 1/32 - still nothing. Tried to increase the camera delay to 1/100μs - nothing. I started seeing the flash effect after 1/600μs. At 1/800μs I saw the brightest pop.
Now back to the subject - my younger daughter enjoying her silk... This 1/256 of the AD 1200 turned out to be way too bright! I didn't want to move the light further away or reduce aperture so I thought I might need an ND filter. Not again! Later I realized I can just reduce the flash efficiency by adjusting timing a little. That did the trick! The kiddo was about to finish her practice and I did not have time to set up a perfect exposure, but I got a few decent shots. At 1/256 power the flash could fire bursts entirely covering my 1-1.5s trigger presses at 60fps, no delays for recharge.
Global shutter changed flash photography forever.
https://gallery-api.medolap.com/api/file/any/4a7125f0-0a38-4242-a6e5-64d20b86d292?width=3000&height=2000&quality=100&ext=.jpg_DSC5653
1/12800s f/1.4 ISO250, Godox AD1200@1/256 + Para 133
https://gallery-api.medolap.com/api/file/any/e1e50890-60bb-413d-a9b2-277ea1bc5da3?width=3000&height=2000&quality=100&ext=.jpg_DSC5452
1/6400s f/2 ISO250, Godox AD1200@1/256 + Para 133
https://gallery-api.medolap.com/api/file/any/b9b49ddc-e73d-45e9-84cb-6418edaa1dec?width=3000&height=2000&quality=100&ext=.jpg_DSC5420
1/6400s f/2 ISO250, Godox AD1200@1/256 + Para 133
The sun was quite bright and 1/250 minimum ISO required 1/12800s for a decently looking background at f/1.4. I set my AD1200 to 1/256 power to see what I get. I heard and saw the flash firing, but I got nothing in the picture... I raised power to 1/128, 1/64, 1/32 - still nothing. Tried to increase the camera delay to 1/100μs - nothing. I started seeing the flash effect after 1/600μs. At 1/800μs I saw the brightest pop.
Now back to the subject - my younger daughter enjoying her silk... This 1/256 of the AD 1200 turned out to be way too bright! I didn't want to move the light further away or reduce aperture so I thought I might need an ND filter. Not again! Later I realized I can just reduce the flash efficiency by adjusting timing a little. That did the trick! The kiddo was about to finish her practice and I did not have time to set up a perfect exposure, but I got a few decent shots. At 1/256 power the flash could fire bursts entirely covering my 1-1.5s trigger presses at 60fps, no delays for recharge.
Global shutter changed flash photography forever.
https://gallery-api.medolap.com/api/file/any/4a7125f0-0a38-4242-a6e5-64d20b86d292?width=3000&height=2000&quality=100&ext=.jpg
1/12800s f/1.4 ISO250, Godox AD1200@1/256 + Para 133
https://gallery-api.medolap.com/api/file/any/e1e50890-60bb-413d-a9b2-277ea1bc5da3?width=3000&height=2000&quality=100&ext=.jpg
1/6400s f/2 ISO250, Godox AD1200@1/256 + Para 133
https://gallery-api.medolap.com/api/file/any/b9b49ddc-e73d-45e9-84cb-6418edaa1dec?width=3000&height=2000&quality=100&ext=.jpg
1/6400s f/2 ISO250, Godox AD1200@1/256 + Para 133
Feb 04, 2024 at 01:09 AM
p.1 #4A9 III + Godox Flash
I'm just trying to figure out how you got your A9III before the official US launch date. 
Feb 04, 2024 at 04:35 PM
p.1 #5A9 III + Godox Flash
This whole flash thing I would have killed for over my 50 years no question about it. I shot tons and tons of flash over my career . Worse I spent thousands and thousands of dollars on many different systems for the sheer power of them . Looks like today with this it's an easy task with fairly lower power units especially in this fill flash with bright sun to get higher sync speeds.
Feb 04, 2024 at 05:00 PM
p.1 #6A9 III + Godox Flash
jhapeman wrote:
I'm just trying to figure out how you got your A9III before the official US launch date.
I had to kidnap a dealer's close relative. BTW there is actually a couple of A9IIIs here on B&S, so people are getting them somehow
It's an amazing little camera. I was hesitating at first because of the low MPx (I couldn't care less about reduced DR), but GS alone is totally worth those missing MPx for me.
GMPhotography wrote:
Looks like today with this it's an easy task with fairly lower power units especially in this fill flash with bright sun to get higher sync speeds.
Yes, it's crazy how simple the process has become now. All you need is to adjust the camera delay. Before you could do something similar with a PocketWizard that would adjust the flash delay but it 1) required an old school non IGBT flash with the longest duration possible, 2) you had to shoot this flash at full power and 3) nothing was guaranteed, and even 1/500s was considered as an achievement.
This photo was taken with an unmodified Godox AD100 (in my left hand), at 1/256 power as well -
https://photostream.us/#/photo/6276
and again, it was brighter than I would like it to be.
I'm just trying to figure out how you got your A9III before the official US launch date.
I had to kidnap a dealer's close relative. BTW there is actually a couple of A9IIIs here on B&S, so people are getting them somehow
It's an amazing little camera. I was hesitating at first because of the low MPx (I couldn't care less about reduced DR), but GS alone is totally worth those missing MPx for me.
GMPhotography wrote:
Looks like today with this it's an easy task with fairly lower power units especially in this fill flash with bright sun to get higher sync speeds.
Yes, it's crazy how simple the process has become now. All you need is to adjust the camera delay. Before you could do something similar with a PocketWizard that would adjust the flash delay but it 1) required an old school non IGBT flash with the longest duration possible, 2) you had to shoot this flash at full power and 3) nothing was guaranteed, and even 1/500s was considered as an achievement.
This photo was taken with an unmodified Godox AD100 (in my left hand), at 1/256 power as well -
https://photostream.us/#/photo/6276
and again, it was brighter than I would like it to be.
Feb 04, 2024 at 05:40 PM
p.1 #7A9 III + Godox Flash
docusync wrote:
I had to kidnap a dealer's close relative. BTW there is actually a couple of A9IIIs here on B&S, so people are getting them somehow
It's an amazing little camera. I was hesitating at first because of the low MPx (I couldn't care less about reduced DR), but GS alone is totally worth those missing MPx for me.
. I see one listed but it won't ship until the release; the other its not clear if it is in their possession or not. I certainly have never seen a Sony camera show up here on the boards--especially the B&S boards--before the actual release date. Sony (and most other manufacturers) don't look very favorably on that. That said, it's also kind of weird that they have staggered release dates so folks in Europe have had them for a week or two ahead of the US.
My dealer will ship so I have it on the 8th, but I know they must have gotten it last week as they called to say it was there and they wanted to run my card and would ship on the 7th for delivery on the 8th.
I'm looking forward to using it for birds in flight, the flash thing is of no interest to me as I hate using flash as it looks unnatural to me in wildlife shots but I can see how it can be revolutionary for those who do daylight people photography and need fill light at a high sync speed.
jhapeman wrote
I'm just trying to figure out how you got your A9III before the official US launch date.It's an amazing little camera. I was hesitating at first because of the low MPx (I couldn't care less about reduced DR), but GS alone is totally worth those missing MPx for me.
. I see one listed but it won't ship until the release; the other its not clear if it is in their possession or not. I certainly have never seen a Sony camera show up here on the boards--especially the B&S boards--before the actual release date. Sony (and most other manufacturers) don't look very favorably on that. That said, it's also kind of weird that they have staggered release dates so folks in Europe have had them for a week or two ahead of the US.My dealer will ship so I have it on the 8th, but I know they must have gotten it last week as they called to say it was there and they wanted to run my card and would ship on the 7th for delivery on the 8th.
I'm looking forward to using it for birds in flight, the flash thing is of no interest to me as I hate using flash as it looks unnatural to me in wildlife shots but I can see how it can be revolutionary for those who do daylight people photography and need fill light at a high sync speed.
Feb 04, 2024 at 07:40 PM
p.1 #8A9 III + Godox Flash
jhapeman wrote:
. I see one listed but it won't ship until the release; the other its not clear if it is in their possession or not. I certainly have never seen a Sony camera show up here on the boards--especially the B&S boards--before the actual release date. Sony (and most other manufacturers) don't look very favorably on that. That said, it's also kind of weird that they have staggered release dates so folks in Europe have had them for a week or two ahead of the US.
My dealer will ship so I have it on the 8th, but I know they...Show more →
I spent Wednesday afternoon shooting an A9III. Simply amazing camera. So they are floating around here and there in the U.S.A. already.
. I see one listed but it won't ship until the release; the other its not clear if it is in their possession or not. I certainly have never seen a Sony camera show up here on the boards--especially the B&S boards--before the actual release date. Sony (and most other manufacturers) don't look very favorably on that. That said, it's also kind of weird that they have staggered release dates so folks in Europe have had them for a week or two ahead of the US.My dealer will ship so I have it on the 8th, but I know they...Show more →
I spent Wednesday afternoon shooting an A9III. Simply amazing camera. So they are floating around here and there in the U.S.A. already.
Feb 04, 2024 at 08:19 PM
p.1 #9A9 III + Godox Flash
I did some math on this, it would appear that on the AD600 pro we are slightly advantaged compared to using a ND in terms of how much sun we can overpower at low shutter speeds, but disadvantaged at high shutter speeds.
This is the "base" setting, I define 1/200s shutter and 1/1 power on the strobe as 0 stops.
- A1: 1/200s, 1/1 strobe, T0.1=1/220s (Shutter = 0 stops, strobe = 0 stops)
Lets try to dim the background by 1 stop.
- A1: 1/200s, 1/1 strobe, T0.1=1/220s, 1 stop ND (Shutter = 0 stops, strobe = 0 stops)
- A1: 1/400s, 1/1 -0.7 strobe, T0.1=1/530s (Shutter = -1 stops, strobe = -0.6 stops)
- A9iii: 1/1000s, 1/2 -0.7 strobe, T0.1 = 1/1200s (Shutter = -2.33 stops, strobe = -1.6 stops)
- Note that using 1/400s on the A1 is better than using 1/200s and a 1 stop ND because the strobe power drops by less than 1 stop.
- Note that the A9iii has a 1/3 stop advantage over the A1 at 1/400s after accounting for the higher base iso.
- Note that the A9iii is running the strobe at lower power for the same results!
Lets try to dim the background by 4 stops.
- A1: 1/400s, 1/1 -0.7 strobe, T0.1=1/530s, 3 stop ND (Shutter = -1 stops, strobe = -3/5 stops)
- A9iii: 1/8000s, 1/128 strobe, T0.1 = 1/8260s (Shutter = -5.3 stops, strobe = -7 stops)
- A1 has a 2 stop advantage here in terms of overpowering the sun, because the A9iii loses more strobe power (7 stops) than it can dim the background (-5.3 stops) with this setting. However, the A1 is not going to recycle very fast with the strobe at 1/1 -0.7 power
I think the real advantage with global shutter is that assuming you have no problems overpowering the sun, extremely little flash power is needed. This is because punching through a 3 stop ND needs 3 stops more ws out of the flash. Using a shorter shutter does not require more ws from the flash.
As an aside:
One thing to note here is that the ISO, ND and Strobe power affect the foreground while Shutter, ISO and ND affect the background. To get the foreground as bright as possible relative to the background, we want to maximize
Therefore what matters is the shutter, which affects the background only and the strobe power, which affects the foreground only.
The shutter also affects the strobe power due flash T0.1 values. If the T0.1 is greater than the shutter speed, then not all the light from the strobe is hitting the sensor... so in a way you my as well use lower strobe power.
I am assuming its best to keep the strobe T0.1 smaller than the shutter speed, but I am not sure if this is correct. Maybe someone with the A9iii can test this. I suspect using 1/1 power will yield a dimmer foreground.
Edited on Feb 04, 2024 at 09:58 PM · View previous versions
This is the "base" setting, I define 1/200s shutter and 1/1 power on the strobe as 0 stops.
- A1: 1/200s, 1/1 strobe, T0.1=1/220s (Shutter = 0 stops, strobe = 0 stops)
Lets try to dim the background by 1 stop.
- A1: 1/200s, 1/1 strobe, T0.1=1/220s, 1 stop ND (Shutter = 0 stops, strobe = 0 stops)
- A1: 1/400s, 1/1 -0.7 strobe, T0.1=1/530s (Shutter = -1 stops, strobe = -0.6 stops)
- A9iii: 1/1000s, 1/2 -0.7 strobe, T0.1 = 1/1200s (Shutter = -2.33 stops, strobe = -1.6 stops)
- Note that using 1/400s on the A1 is better than using 1/200s and a 1 stop ND because the strobe power drops by less than 1 stop.
- Note that the A9iii has a 1/3 stop advantage over the A1 at 1/400s after accounting for the higher base iso.
- Note that the A9iii is running the strobe at lower power for the same results!
Lets try to dim the background by 4 stops.
- A1: 1/400s, 1/1 -0.7 strobe, T0.1=1/530s, 3 stop ND (Shutter = -1 stops, strobe = -3/5 stops)
- A9iii: 1/8000s, 1/128 strobe, T0.1 = 1/8260s (Shutter = -5.3 stops, strobe = -7 stops)
- A1 has a 2 stop advantage here in terms of overpowering the sun, because the A9iii loses more strobe power (7 stops) than it can dim the background (-5.3 stops) with this setting. However, the A1 is not going to recycle very fast with the strobe at 1/1 -0.7 power
I think the real advantage with global shutter is that assuming you have no problems overpowering the sun, extremely little flash power is needed. This is because punching through a 3 stop ND needs 3 stops more ws out of the flash. Using a shorter shutter does not require more ws from the flash.
As an aside:
One thing to note here is that the ISO, ND and Strobe power affect the foreground while Shutter, ISO and ND affect the background. To get the foreground as bright as possible relative to the background, we want to maximize
- Foreground - Background
- = (ISO + ND + Strobe) - (Shutter + ISO + ND)
- = Strobe - Shutter.
Therefore what matters is the shutter, which affects the background only and the strobe power, which affects the foreground only.
The shutter also affects the strobe power due flash T0.1 values. If the T0.1 is greater than the shutter speed, then not all the light from the strobe is hitting the sensor... so in a way you my as well use lower strobe power.
I am assuming its best to keep the strobe T0.1 smaller than the shutter speed, but I am not sure if this is correct. Maybe someone with the A9iii can test this. I suspect using 1/1 power will yield a dimmer foreground.
Edited on Feb 04, 2024 at 09:58 PM · View previous versions
Feb 04, 2024 at 08:33 PM
p.1 #10A9 III + Godox Flash
jhapeman wrote:
I'm looking forward to using it for birds in flight, the flash thing is of no interest to me as I hate using flash as it looks unnatural to me in wildlife shots but I can see how it can be revolutionary for those who do daylight people photography and need fill light at a high sync speed.
I agree. I tried an on-camera flash with a fresnel glass (“Better Beamer”) long time ago, and while feathers looked acceptable - the eyes are definitely not, and it’s pretty much impossible to fix them.
I'm looking forward to using it for birds in flight, the flash thing is of no interest to me as I hate using flash as it looks unnatural to me in wildlife shots but I can see how it can be revolutionary for those who do daylight people photography and need fill light at a high sync speed.
I agree. I tried an on-camera flash with a fresnel glass (“Better Beamer”) long time ago, and while feathers looked acceptable - the eyes are definitely not, and it’s pretty much impossible to fix them.
Feb 04, 2024 at 09:23 PM
p.1 #11A9 III + Godox Flash
Thank you for this report with some great pics. Nice solution by adjusting the delay time as well. Looks like a camera to get for me.
Feb 04, 2024 at 11:56 PM
p.1 #12A9 III + Godox Flash
hiepphotog wrote:
Thank you for this report with some great pics. Nice solution by adjusting the delay time as well. Looks like a camera to get for me.
Thank you for the kind words! I'm sure you will like this camera because it opens new horizons. Just be prepared that it won't deliver very fine details like you'd get from the high-res no-AA bodies like the A1/A7rV. Fortunately, LR's "Enhance" feature brings some of those details and pixel level sharpness back.
Thank you for this report with some great pics. Nice solution by adjusting the delay time as well. Looks like a camera to get for me.
Thank you for the kind words! I'm sure you will like this camera because it opens new horizons. Just be prepared that it won't deliver very fine details like you'd get from the high-res no-AA bodies like the A1/A7rV. Fortunately, LR's "Enhance" feature brings some of those details and pixel level sharpness back.
Feb 05, 2024 at 08:24 AM
p.1 #13A9 III + Godox Flash
Great post. I shoot some sports but the flash sync without losing power is the number one draw for me with the A9III. I have a couple of the AD1200 units and can imagine the creative possibilities shooting outdoors in full sunlight. Definitely a niche use for most but something I look forward to experimenting with.
Feb 05, 2024 at 08:43 AM
p.1 #14A9 III + Godox Flash
camera's flash performance; great.
but the skill of your young daughter is much more impressive! ))
but the skill of your young daughter is much more impressive! ))
Feb 05, 2024 at 08:47 AM
p.1 #15A9 III + Godox Flash
tntcorp1 wrote:
camera's flash performance; great.
but the skill of your young daughter is much more impressive! ))
Thank you
stuuke wrote:
I have a couple of the AD1200 units and can imagine the creative possibilities shooting outdoors in full sunlight.
Wow that is a LOT of power!
aCuria wrote:
I am assuming its best to keep the strobe T0.1 smaller than the shutter speed, but I am not sure if this is correct. Maybe someone with the A9iii can test this. I suspect using 1/1 power will yield a dimmer foreground.
I'm not a helluva expert, but as far as I know all battery powered Godox flashes are IGBT controlled. If you look at the green charts on the PCB website https://www.paulcbuff.com/Flash-Duration.html - IGBT can simply interrupt the light emission at whatever moment of time it wants. Basically, that chart will be cut off either by IGBT circuit or by the camera itself (end of exposure). It means that there is no point to emit more light that the sensor can capture, so 1/1 doesn't make much sense here. I think ideally the flash should emit about as much light as it can be captured in full by the sensor. Slightly more or slightly less - doesn't matter. One important thing here is to adjust the exposure delay because it can be finished before the flash even starts emitting light (trigger/flash radio communications and equipment delays).
camera's flash performance; great.
but the skill of your young daughter is much more impressive! ))
Thank you
stuuke wrote:
I have a couple of the AD1200 units and can imagine the creative possibilities shooting outdoors in full sunlight.
Wow that is a LOT of power!
aCuria wrote:
I am assuming its best to keep the strobe T0.1 smaller than the shutter speed, but I am not sure if this is correct. Maybe someone with the A9iii can test this. I suspect using 1/1 power will yield a dimmer foreground.
I'm not a helluva expert, but as far as I know all battery powered Godox flashes are IGBT controlled. If you look at the green charts on the PCB website https://www.paulcbuff.com/Flash-Duration.html - IGBT can simply interrupt the light emission at whatever moment of time it wants. Basically, that chart will be cut off either by IGBT circuit or by the camera itself (end of exposure). It means that there is no point to emit more light that the sensor can capture, so 1/1 doesn't make much sense here. I think ideally the flash should emit about as much light as it can be captured in full by the sensor. Slightly more or slightly less - doesn't matter. One important thing here is to adjust the exposure delay because it can be finished before the flash even starts emitting light (trigger/flash radio communications and equipment delays).
Feb 05, 2024 at 08:58 AM
p.1 #16A9 III + Godox Flash
docusync wrote:
but the skill of your young daughter is much more impressive! ))Thank you
Wow that is a LOT of power!
I'm not a helluva expert, but as far as I know all battery powered Godox flashes are IGBT controlled. If you look at the green charts on the PCB website https://www.paulcbuff.com/Flash-Duration.html - IGBT can simply interrupt the light emission at whatever moment of time it wants. Basically, that chart will be cut off either by IGBT circuit or by the camera itself (end of exposure). It means that there is no point to emit more light that the sensor can capture, so 1/1 doesn't make much sense here. I think ideally the...Show more →
I suppose this means the flash curve is always the same regardless of flash duration.
Does this mean for a given shutter speed (say 1/8000s) we would want to choose a flash duration slightly longer than 1/8000s for maximum power?
And for the 1/8000s shutter, the flash power shooting at 1/1 and 1/7000s is effectively the same?
tntcorp1 wrote
camera's flash performance; great.but the skill of your young daughter is much more impressive! ))
stuuke wrote
I have a couple of the AD1200 units and can imagine the creative possibilities shooting outdoors in full sunlight.aCuria wrote
I am assuming its best to keep the strobe T0.1 smaller than the shutter speed, but I am not sure if this is correct. Maybe someone with the A9iii can test this. I suspect using 1/1 power will yield a dimmer foreground.I suppose this means the flash curve is always the same regardless of flash duration.
Does this mean for a given shutter speed (say 1/8000s) we would want to choose a flash duration slightly longer than 1/8000s for maximum power?
And for the 1/8000s shutter, the flash power shooting at 1/1 and 1/7000s is effectively the same?
Feb 07, 2024 at 01:59 AM
p.1 #17A9 III + Godox Flash
See If I can put this in perspective to actually shooting . Let's say you have a group shot of 5 people in strong sunlight in the background and hitting them from behind so you need fill light. Today your shutter speed and sync speed is no greater than 1/250 of a second at lets say you want F8 to shoot at. Well F8 and 1/250 will not bring down the ambient light to match your flash output. Now lets say you can get F8 out of the flash but you cant't get the shutter speed faster with the global shutter now you can so lets say that balance point is 1/8000 sync speed. So you dropped the ambient light into that F8 zone. Remember the shutter speed is ambient light hitting the subject the Flash is basically the aperture setting to get F8 . So in essence you can balance this scenario better. Today you have to blast them with a flash that has to get to F16 at 1/250 sync speed to balance it out. So you need a lot of power, with global shutter you cut that need out as now you can balance the ambient light much better with shutter speed and drop the scene into that flash F8 zone you want to shoot at. Fo my 50 years I would have killed for this ability along with everyone on the planet. This is a big deal especially to commercial shooters and wedding shooters not to mention every hobbyist out there that did not buy 4 grand in lighting gear to get huge amount of flash power.
Now im still trying to understand the lingo here but this scenario is what you really want out of the global shutter at least in the flash area. Now we have the ability to raise the sync speed to match our flash output. In this scenario global shutter is controlling the Ambient light and Flash controls the aperture.
I want to try this really badly
Now im still trying to understand the lingo here but this scenario is what you really want out of the global shutter at least in the flash area. Now we have the ability to raise the sync speed to match our flash output. In this scenario global shutter is controlling the Ambient light and Flash controls the aperture.
I want to try this really badly
Feb 07, 2024 at 06:10 AM
p.1 #18A9 III + Godox Flash
in the uk the A9III is 6099GBP, an A7R5 is 3699GBP and A7CR is 2799GBP or 6598GBP for both, seems a wonder of a camera, but an A1 is 5879GBP.
Feb 07, 2024 at 06:35 AM
p.1 #19A9 III + Godox Flash
A A1 does not have global shutter nor does any other camera. Tools like anything else if you need it than costs are secondary.
Feb 07, 2024 at 07:08 AM
p.1 #20A9 III + Godox Flash
Budding A9 III users please go to the DxO site and request support for the A9 III. Currently scheduled for April.
https://www.dxo.com/supported-cameras/suggest-module/
https://www.dxo.com/supported-cameras/suggest-module/
Feb 07, 2024 at 01:39 PM