GH5 / Nauticam Housing - Rumbling / Motor Like Noise in Video?

Hi! There often is a grumbling, small motor sound that has popped up in my videos. It's not boat noise. It's apparent in some videos and not in others on the same dive. No changes are made to the settings.

Not a huge deal-breaker but it would be nice if it weren't there.

Quick throw away example : https://vimeo.com/644165063

Using a Gh5 with the Nauticam housing.

I cant figure out what it could be. Any ideas? Greatly appreciate any insight one could lend. Thx!

Wow. I'never experienced something similar.

My first thought would go to a fault on:

1. camera IBIS
2. Lens OIS
3.  Lens AF (if you use CAF)

Of course it depends on your lens and settings. You could try to disable IBIS/OIS and maybe changing AF 

I listened to the video and it doesn't sound like any noise I've heard a camera or lens make.  If you played it to me I'd think there was a boat of some type nearby.  Can you hear it when you are diving?  It sounds to be definitely louder than any of the water noises you can also pick up in the video.

Further info : Using the native Lumix 7-14mm lens. I did have AF-C so maybe it is the lens !?

Will give AF-S a shot next time...Maybe that is it!

We did not hear that noise while under the water / at the surface. Absolutely positive it is not the boat (engine was for sure off, as we were free-diving around it). Additionally my wife's camera footage w/ a different camera does not have the noise (as well other videos of mine just moments later not featuring that sound). That noise appears in previous vidoes as well (sigh)

My experience is that camera can be extremely noisy in the housing. Another throw away clip, from the same time. Slightly different +/- settings  but everything else is the same. No motor / purring here but lots of clanking around from the lanyard clips .

Think I solved this mystery..I was taking a look at the camera tray that screws onto the camera and it could not be any more loose.

I bet dollars to donuts it was vibrating /rattling inside the housing, hence the constant motor sound.....

Will leave this post up in case for some reason someone else doesn't thing to check the tray!

I'm happy you solved.

I had the same setup. Check the camera mic volume. At max volume it is capable of recording  my rebreather breath.

In the first video you posted, it sounds like lens autofocus continuous noise (I have similar issue with adapted Canon 8-15mm).

Second video there's different noises, but one of them at least sounds like the noise from adjusting the focal length using the zoom gear.

On 11/16/2021 at 8:34 PM, dreifish said:

In the first video you posted, it sounds like lens autofocus continuous noise (I have similar issue with adapted Canon 8-15mm).

Second video there's different noises, but one of them at least sounds like the noise from adjusting the focal length using the zoom gear.

I'm glad to discover that it's not just me that has a noisy adapted 8-15 FE. It sounds like a cluttered dishwasher when autofocusing. Is it clunky on native EF mount?

I don't shoot video with it, so not a problem, but it does make me wonder how the Canon engineers define ultrasonic. Maybe they think it means extra loud?