Are there ND filters being made for the newer OSMO 3?

I ask, not because I actually own or plan to buy an OSMO 3 but, it's because I'm wondering if there are actually any ND filters that are made for these new DJI cameras.

I own a cheap off-brand action camera that no matter what adjustments I make to it I'm still getting video recordings that are far too bright for my liking.  I can fix most of it in post editing but it would be nice if I could just use an ND filter to tone it down a bit instead, and from the looks of it, the lens dimensions of the OSMO 3 look to be close enough to the actual glass lens dimensions of my off-brand action camera.

I'm wanting to find an action camera or vloging camera with a lens size close to the size of the outside dimensions of the circular lens housing that protrudes from the face of my older AKASO Brave 4 action camera.  If I can buy an ND filter of the approximate size or just close enough, I can then use my CAD software to model and 3D print an adapter to fit the ND filter onto my action camera.

The outside diameter of the lens housing that protrudes from the front of my action camera measures 24mm.  The actual glass lens diameter in the middle measures 14mm.  If I can find an ND filter with similar diameter dimensions I can just make an adapter to use to mount it to my action camera.

It doesn't have to be those exact dimensions.  It can even be a little bit bigger.  I just want to try using an ND filter to tone down the images I'm getting out of this particular action camera.  The video recordings are great otherwise.  It's just that I've grown weary of all the editing to get them to where I want them.

Can anyone here suggest an ND filter in 32 or 64 with close enough dimensions of any of the DJI camera offerings? If you can it would be a big help for me.

Have you looked on Aliexpress.   There's thousands of ND filters over there.

DAFlys Posted at 11-2 01:10
Have you looked on Aliexpress.   There's thousands of ND filters over there.

Yes I have looked there and on the Temu site.  They do have many different ND filter types for various cameras.

I've contacted sellers at both sites asking if they could tell me the dimensions of their ND filters.

The ones that look to be the closes in the photos in the item descriptions have all turned out to be either too big or too small.

If it's too big I could still model an Adapter in my CAD software and 3D print it but a larger ND filter lens would block the little front screen on my action camera.

If it's too small I'm afraid that it would create a sort of vignetting effect in the shots.  Eventually I'll come across the right ND filter to be able to adapt it to my action camera.

Thanks for taking the time to offer up a suggestions.  It was a good idea.

I found what I was looking for on Amazon.  A set of 4 ND filters made to fit the older GoPro 3 and 4.
It turns out that the inside diameters of those particular ND filters are the same as the outside diameters of the lens protrusion on my El-Cheapo action camera.
The action camera I'm using shoots nice video and is really reliable, it's just that the videos were coming out a bit on the bright side.
This 12-dollar set of ND filters should be just the ticket to compliment this equally inexpensive action camera.
Many thanks to DAFlys for taking the time to reply.

Did you manage to find some?

Montfrooij Posted at 3-15 06:54
Did you manage to find some?

Yes I did.  Thanks for asking and sorry it took so long to reply.

Tech-Retard Posted at 4-24 19:03
Yes I did.  Thanks for asking and sorry it took so long to reply.

Are the filters any good?

A J Posted at 4-28 11:02
Are the filters any good?

I only purchased one filter.  It's an ND 64.
Why just one filter?

The vast majority of my flights are done in bright Arizona daylight hours.  I found that I really had no use for a selection of ND filters.

The onboard automatic sensors in the drone's camera takes care of the rest.

I'm not heavy into manually setting my video camera parameters.  Without this lone ND 64 filter in place my video always tended to come out looking on the bright or washed out side of the spectrum.

Now all is right in my camera drone recording world.  My post processing is so much less time consuming.

Tech-Retard Posted at 4-28 12:06
I only purchased one filter.  It's an ND 64.
Why just one filter?

That makes perfect sense - thanks for sharing your findings and rationale

It sounds like you're putting in quite the effort to find the right ND filter for your action camera! Regarding your concerns about sizing, have you checked Temu's return policy? It might provide some reassurance in case the filter doesn't fit as expected. temuapp.io/temu-return-policy

virat Dube Posted at 4-28 21:30
It sounds like you're putting in quite the effort to find the right ND filter for your action camera! Regarding your concerns about sizing, have you checked Temu's return policy? It might provide some reassurance in case the filter doesn't fit as expected. temuapp.io/temu-return-policy

This issue was taken care of quite a while back now.
The set of ND filters that I purchased required only a very small amount of modifying and so now I have a full set of ND filters for my off-brand action camera.

No need sending them back now.  They work perfectly fine.  The funny thing is that out of the set of ND filters I purchased for my off-brand action camera, I generally only use one of them.  It's the ND64.

I do the same thing with my Mini 4 Pro.  I found that after all of the searching I did to find out about ND filters, the ND 64 filter was really all I ever needed.  The internal automatic compensation of the cameras in my Mini 4 and my action camera takes care of the rest.

Tech-Retard Posted at 4-24 19:03
Yes I did.  Thanks for asking and sorry it took so long to reply.

Good to hear. Which ones did you get?

Montfrooij Posted at 4-30 23:44
Good to hear. Which ones did you get?

I found a brand new full set on Ebay that were made to fit an older version of Go Pro action camera.
The inside diameters had some divots on them that I had to file down a bit but after doing this they  fit perfectly on my off-brand action camera.

Tech-Retard Posted at 5-18 18:20
I found a brand new full set on Ebay that were made to fit an older version of Go Pro action camera.
The inside diameters had some divots on them that I had to file down a bit but after doing this they  fit perfectly on my off-brand action camera.

Another nice DIY job done then

you can easy to buy this product on temu app

LondonBlock Posted at 7-28 22:58
you can easy to buy this product on temu app

At the time that I was looking for ND filers, there were not yet available.  
It's been a while now so, my ND filter problem has now been solved.
Thanks