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Swappable lens for the Action 4
3594 17 2023-8-24
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JustName
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@DJI

The new Action 4 seems to be almost a perfekt Actioncam and i really love it! But! The wide angle lens is in some usecases a really pain. On the one side there is a visible distortion if the movement is not directly back, or forth. On the other side there is a mostly always to much content in the image, so we have to crop it.  

As far as i know and have tested it, the current lens can be easily unscrewed and replaced with another. Would be a great feature if different lenses were available directly from DJI, for example with less wide angle.  


2023-8-24
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DJI Wanda
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Hello, there. May we know if you try to switch FOV from Wide to Standard(Dewarp)? Or is there anything we have not noticed yet?  Please tell us more information.
2023-8-24
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JustName
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Hello Wanda, sure i did it :-) But the switch is nothing else then croping and stretching of the image inside the cam. With other words there is  loss of image quality.
2023-8-24
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nianeko3
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If the OA4 lens screw is M12 P0.5, there are many kinds of lenses can be changed.
2023-12-1
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JustName
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nianeko3 Posted at 12-1 05:37
If the OA4 lens screw is M12 P0.5, there are many kinds of lenses can be changed.

Yes it is M12, but the most lenses are not designed for such "big" sensor size.
2023-12-1
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nianeko3
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JustName Posted at 12-1 08:21
Yes it is M12, but the most lenses are not designed for such "big" sensor size.

OA1 and OA3 are not M12. But OA4 is M12 P0.5. I think this is the first information.
2023-12-2
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JustName
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nianeko3 Posted at 12-2 05:21
OA1 and OA3 are not M12. But OA4 is M12 P0.5. I think this is the first information.

??

Why are you speaking about OA1 and OA3 now? This is a OA4 topic. And it still remains the case that you can hardly find an M12 lens designed for a 1/1.3 sensor.
2023-12-2
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nianeko3
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JustName Posted at 12-2 09:50
??

Why are you speaking about OA1 and OA3 now? This is a OA4 topic. And it still remains the case that you can hardly find an M12 lens designed for a 1/1.3 sensor.

I need to use narrow lenses, so I changed the OA1 lens mount to M12.
But this was not easy.
Apart sensor size problem, OA4 is the first M12 camera of OA series.
2023-12-2
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JustName
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nianeko3 Posted at 12-2 15:34
I need to use narrow lenses, so I changed the OA1 lens mount to M12.
But this was not easy.
Apart sensor size problem, OA4 is the first M12 camera of OA series.

Ok, I see :-) Let us know if you do find a suitable lens. I have checked various suppliers and also made direct inquiries. Not a single one had an M12 lens for the sensor size.

I had already thought about buying a defective GoPro and checking whether the lens might fit. But again the problem with the sensor.
Theoretically, the lens from the new Insta 360 Ace Pro could fit, because of the same sensor size. But will probably be too wide at the head part.
2023-12-3
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nianeko3
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JustName Posted at 12-3 02:00
Ok, I see :-) Let us know if you do find a suitable lens. I have checked various suppliers and also made direct inquiries. Not a single one had an M12 lens for the sensor size.

I had already thought about buying a defective GoPro and checking whether the lens might fit. But again the problem with the sensor.

GoPro lens is M12, but screw pitch is 0.35mm, not 0.5mm.
Did you measure the pitch of OA4 lens screw?
2023-12-3
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johansenfoto
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Isn't it possible to just buy a cheap lens for trying?
2023-12-3
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Fishycomics
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Is this not yours and did you find one  for the Action 4 yet

2023-12-3
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JustName
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johansenfoto Posted at 12-3 10:16
Isn't it possible to just buy a cheap lens for trying?

Sure, but... all the available M12 lenses are designed for smaler sensor then in OA4. The biggest one i did found was 1/1.7 sensor size. That means you will be not able to use the whole sensor, just a circle in the middle.
2023-12-3
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johansenfoto
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JustName Posted at 12-3 10:51
Sure, but... all the available M12 lenses are designed for smaler sensor then in OA4. The biggest one i did found was 1/1.7 sensor size. That means you will be not able to use the whole sensor, just a circle in the middle.

You are right, it will not do well.
2023-12-3
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nianeko3
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Fishycomics Posted at 12-3 10:23
Is this not yours and did you find one  for the Action 4 yet

https://www.youtube.com/watch?v=JqiCpdxMFbE

I am using this M12 OA1, not have OA4 yet.
Afraid sensor size is too big to change mount.
But if OA4 lens mount is M12 P0.5, not need to change.
2023-12-3
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nianeko3
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At AliExpress there are M12 P0.5 for 2/3 lenses, a bit narrow for 1/1.3.
But as for narrow range, these may be better than original.
2023-12-3
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JustName
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nianeko3 Posted at 12-3 15:20
At AliExpress there are M12 P0.5 for 2/3 lenses, a bit narrow for 1/1.3.
But as for narrow range, these may be better than original.

Maybe, but you will use max. 86% of the sensor size.  
2023-12-4
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kkmoto
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Is there an additional lens to replace the original filter, such as a 2X or 3X telescope lens?
5-14 18:28
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