I've noticed that when I am running with the camera on a head strap I get a slight pulsating picture. It's like the camera is trying to change exposure or something at each of my step.
You may notice it in the video. It's visible inte top right corner during the first half of the clip and then in second half I think it's the road that is changing constantly.
I was wondering if there is some setting that I need to change to get rid of this.
Thanks in advance.

I noticed it in old firmware, couldn't test yet with new (yesterday) one. What firmware are you using right now?

I am using the latest official 01.00.07.30

Here is the video https://youtu.be/8HpjWCB5yjk

mpquads Posted at 10-18 06:57
Here is the video

What are your current settings are you on auto or manual? Try setting a manual/fixed White balance in the first instance it’s possible the change in lighting angle due to head movements is causing White balance shift

BaynhamPhoto Posted at 10-18 07:48
What are your current settings are you on auto or manual? Try setting a manual/fixed White balance in the first instance it’s possible the change in lighting angle due to head movements is causing White balance.

Changing to manual exposure wont help...

This issue is my biggest problem with the camera, i hope they will fix it.
I made a much more pronounced example https://drive.google.com/file/d/1C0GSQxVBKRI5ejd6d5PAabRAA4wQG8sv/view?usp=sharing

The problem is mostly visible if you are shaking the camera left-right in Dewarp, Horizont steady mode. It persist in all modes, least problematic if you shoot in 4:3 and do gyroflow stabilization in post.

What causes the issue: the lens is vignetting heavily but the periferal illumination correction is not correct. So the sides of the lens are a lot darker. When you do EIS stabilization without proper shading correction this phenomenon occurs.
One thing i could not test: IF the lens cover causes this issue, maybe removing it may solve the issue. However i cannot unscrew it and havent find any information if it's removable.

If the vignette correction is caused by the lens and not it's cover it can be fixed via firmware update.

BaynhamPhoto Posted at 10-18 07:48
What are your current settings are you on auto or manual? Try setting a manual/fixed White balance in the first instance it’s possible the change in lighting angle due to head movements is causing White balance shift

I believe I had it set to Auto. I will try to set it fixed.

Hi there, thank you for reaching out. Could you please share us a video example showing the issue for us to check further on this and advise you accordingly?

Looking forward to your response. Thank you!

DJI Natalia Posted at 10-19 01:25
Hi there, thank you for reaching out. Could you please share us a video example shwqoign the issue for us to check further on this and advise you accordingly?

Looking forward to your response. Thank you!

If it can be of any help, here you are a 16 seconds clip showing the exposure issue (Action 4 on the left, Action 5 on the right). Horizon balancing, dewarp, 4k 16:9, DLogM, Max Iso 6400, EV -0.3, WB 5500K on both cameras.

Umberto Uderzo Posted at 10-19 02:12
If it can be of any help, here you are a 16 seconds clip showing the exposure issue (Action 4 on the left, Action 5 on the right). Horizon balancing, dewarp, 4k 16:9, DLogM, Max Iso 6400, EV -0.3, WB 5500K on both cameras.

https://youtu.be/41vd3w9i-gU

Sample of DJI Osmo Action 5 Pro changing exposure on each step.
The camera is mounted on a GoPro head strap 2.0.
Settings are:
4k 4:3 50fps
Rocksteady+ Wide
D-Log M 10 bit (not color graded)
Image Adjustment: -2(Texture), -1(Noise reduction)
Exposure Auto: 1/100 - 1/8000
ISO: 100 - 1600
WB: 5500k

https://youtu.be/h_JrxrBweXs

mpquads Posted at 10-19 07:07
Sample of DJI Osmo Action 5 Pro changing exposure on each step.
The camera is mounted on a GoPro head strap 2.0.
Settings are:

Yes, it can be something related to the uncorrected lens vignetting when doing EIS.

Umberto Uderzo Posted at 10-19 07:54
Yes, it can be something related to the uncorrected lens vignetting when doing EIS.

Is it something that a software update can correct, or should I buy a GoPro?

Deadcode Posted at 10-18 07:58
Changing to manual exposure wont help...

This issue is my biggest problem with the camera, i hope they will fix it.

If you fix the shutter speed and ISO, the picture is stable, without vignetting and brightness jumps. This eliminates the problem of protective glass.

Supsss3 Posted at 12-21 23:15
If you fix the shutter speed and ISO, the picture is stable, without vignetting and brightness jumps. This eliminates the problem of protective glass.

Well yes maybe, but we are talking about an action camera, not a cinema camera that needs to be correctly set before each shot. Moreover, nearly all other action cameras on the market work the exposure without noticeable issues.

Umberto Uderzo Posted at 12-21 23:26
Well yes maybe, but we are talking about an action camera, not a cinema camera that needs to be correctly set before each shot. Moreover, nearly all other action cameras on the market work the exposure without noticeable issues.

Some people are luckier than us! But I meant that it's not the protective ring, glass. I ruled that out. You shouldn't lock the shutter speed and ISO on an action camera, it will ruin the shot.

I don't know if I have good news or bad. But I turned off stabilization, attached the camera to a smartphone gimbal. D-LOG M - Standard 50 FPS shutter speed 1/100 ISO 100-3200 + ND filter. The photo is without a vignette and there is no brightness pulsation. It turns out that the problem is in the electronic stabilization of Action 5. Maybe DJI will give us a gift for the New Year and release an update???

Supsss3 Posted at 12-22 11:55
I don't know if I have good news or bad. But I turned off stabilization, attached the camera to a smartphone gimbal. D-LOG M - Standard 50 FPS shutter speed 1/100 ISO 100-3200 + ND filter. The photo is without a vignette and there is no brightness pulsation. It turns out that the problem is in the electronic stabilization of Action 5. Maybe DJI will give us a gift for the New Year and release an update???

I am running with 50fps 1/400 shutter speed and 100-800 ISO. It's fine with good light (sunny), low light is dark obviously. But the shakes are almost non existent, sometime bit of light pulsation. I think with static ISO value it could be even better.

Supsss3 Posted at 12-22 11:55
I don't know if I have good news or bad. But I turned off stabilization, attached the camera to a smartphone gimbal. D-LOG M - Standard 50 FPS shutter speed 1/100 ISO 100-3200 + ND filter. The photo is without a vignette and there is no brightness pulsation. It turns out that the problem is in the electronic stabilization of Action 5. Maybe DJI will give us a gift for the New Year and release an update???

They will release Action6 for XMas. Sometimes you have to accept the reality and rebuild all from scratch (joking)