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Osmo Pocket Motion Time-lapse focus problem
437 11 1-5 10:55
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Tide
lvl.3
Korea, Republic of
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I was shooting a night time motion time-lapse and had a focus problem.

My motion time-lapse setting was as below:
- Manual mode
- iso 100
- shutter speed 2"
- 5 sec interval for 10 mins
- AFS (touched screen to set the focus on the road)
- 2 way points

Result is a below picture:
Motion.JPG
As you can see, it is completely out of focus.
The issue is in motion time-lapse mode, even if I touch the phone's screen to manually focus (and screen was indeed in focus) before shooting, when the gimbal moves to first way point, it totally lost a focus. So in motion time-lapse, manual focus is meaningless.


To compare, I took a normal time-lapse as well:
Time.JPG
As you can see, it is in focus in normal time-lapse.
It maintained a focus that is manually set because the gimbal never moved.

Just to test, I also change the focus option to AFC and tried motion time-lapse but it was still out of focus.
Also tried to move gimbal manually to the position close to way point 1 before shooting and set the focus but even in a small difference, it lost a focus with gimbal movement.

So above is my situaltion report and below is my suggestion.

1. Pocket is having a hard time to focus in night scene and manual focus is required in above situaltion
2. However motion time-lapse cannot maintain the manual focus while moving the gimbal to way point 1.
3. To solve it, I want a option button to move the gimbal to way point 1 after setting all the way points.
4. After moving gimbal to way point 1, I can set the manual focus before shooting.
5. Now pocket can beggin shooting motion time-lapse with manual focus maintained.


I hope dji engineers can solve this problem.




1-5 10:55
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Tide
lvl.3
Korea, Republic of
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I was shooting for 2 hours outside in 3 different locations and all of my 10 motion time-lapses were out of focus.
1-5 20:44
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Tide
lvl.3
Korea, Republic of
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Dji moderators,
Could you make sure this issue is reported to dji engineers?
I think motion time-lapse focus problem is limiting the pocket from the huge potential.
1-7 15:08
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Tide
lvl.3
Korea, Republic of
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Moderators, any response?
Hope this issue have been forwared to engineers.

1-10 00:34
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kburn
lvl.2
Flight distance : 132783
Australia
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This is a serious issue. I have yet to try a low light motionlapse but was hoping to do one of Northern lights in Norway.
Can others who have similar problems please share their experiences.
1-12 00:46
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Tide
lvl.3
Korea, Republic of
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kburn Posted at 1-12 00:46
This is a serious issue. I have yet to try a low light motionlapse but was hoping to do one of Northern lights in Norway.
Can others who have similar problems please share their experiences.

I posted my time-lapse video in other post.
You can check the motion lapse video sample with out of focus scenes.

https://forum.dji.com/forum.php?mod=viewthread&tid=177519&page=1&mobile=2#pid1717225
1-12 00:55
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Ray-CubeAce
lvl.4
United Kingdom
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These types of cameras rely upon on contrast measurement focusing systems and as such will lose focus whenever the focus point comes into an area of low contrast with no sharp verticals to lock onto. Also, it has an f2 aperture so even on a wide angled lens (which given its field of view, strictly speaking, isn't so much,) the depth of focus is going to be relatively shallow.  The only way you will even get close to a result at night doing this is to go for single focus and focus at an object within your scanning area which roughly corresponds with the hyperfocal length. I think it's a problem that can't be corrected with any firmware update.
1-12 06:59
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Tide
lvl.3
Korea, Republic of
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Ray-CubeAce Posted at 1-12 06:59
These types of cameras rely upon on contrast measurement focusing systems and as such will lose focus whenever the focus point comes into an area of low contrast with no sharp verticals to lock onto. Also, it has an f2 aperture so even on a wide angled lens (which given its field of view, strictly speaking, isn't so much,) the depth of focus is going to be relatively shallow.  The only way you will even get close to a result at night doing this is to go for single focus and focus at an object within your scanning area which roughly corresponds with the hyperfocal length. I think it's a problem that can't be corrected with any firmware update.

I already tried single focus and it works until the gimbal head moves to way point one.
I checked focus with a picture before hand cus it is a challenging situation for contrast focus and tries motion time-lapse when I can conform the focus come out ok on picture.

Being said that, my issue here is not about OP's focus capablity. Issue is that OP lost a manually set focus when gimbal head oriented to the first way point.
1-12 19:10
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Tide
lvl.3
Korea, Republic of
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Ray-CubeAce Posted at 1-12 06:59
These types of cameras rely upon on contrast measurement focusing systems and as such will lose focus whenever the focus point comes into an area of low contrast with no sharp verticals to lock onto. Also, it has an f2 aperture so even on a wide angled lens (which given its field of view, strictly speaking, isn't so much,) the depth of focus is going to be relatively shallow.  The only way you will even get close to a result at night doing this is to go for single focus and focus at an object within your scanning area which roughly corresponds with the hyperfocal length. I think it's a problem that can't be corrected with any firmware update.

By the way thanks for the input
1-12 19:55
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edwardyyy
lvl.2
Hong Kong
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when doing motion-lapse @ daytime, OP move to point A, start recording but without re-focusing, always focus to infinite ( hyperfocal distance may be? ).
a bug here?
1-12 21:50
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Ray-CubeAce
lvl.4
United Kingdom
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edwardyyy Posted at 1-12 21:50
when doing motion-lapse @ daytime, OP move to point A, start recording but without re-focusing, always focus to infinite ( hyperfocal distance may be? ).
a bug here?

Not sure if it's a bug but more of a problem of having a fixed wide aperture on the lens which makes for a narrower focusing depth within a frame that has a lot of depth to it. If there is a bug it would be if the Pocket refocused after each shot rather than stuck to the focus point selected for the first frame or ignored the focus point set and used it's own on the first exposure. I think it may be the latter as I see the same problem occurring on some 3x3 panoramas. If you take a selfie using the 3x3 panorama mode the background is normally sharp with the main subjects in the foreground being out of focus by some margin.
1-13 06:35
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Giammi
First Officer
Flight distance : 141268
Italy
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Same issue here.. trashed a lot of motion-lapses due to this matter and, what is worse, is that I had this issue even during the day, with a very bright scene..
1-17 07:58
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