Jump to content

High pitched sound on Slow-mo footage


Recommended Posts

Hi all,


Just recently purchased a Sony Alpha 6600 Premium Mirrorless APS-C Camera with a Sony SEL50F18 E Mount - APS-C 50mm F1.8 Prime Lens and have been experiencing a problem when I slow down 100fps footage to 25fps (interpreting the footage in Premier Pro to give the slowmo effect). The footage has a high pitched sound over it which I assume is above human hearing range on the 100fps footage before I bring it to a slower frame rate where it then becomes audible.


Perhaps this is something I'm doing wrong or a fault but after sending this same video with this same fault description to Amazon they took it for repair and sent it back to me within the EXACT same second it had arrived at their depot having done absolutely nothing to it except damage the box :)


So before I return it for good I thought I'd check to see if it is just something I am simply doing wrong. I've attached a tiny video with the high pitched audio present. Any help would be massively appreciated.



Link to post
Share on other sites

22 minutes ago, ShakeyX said:


Thanks for the reply.

Yes the sound is present in all environments and it is 100% not from the actual audio present when recording.

To exclude the camera's audio track, I suggest trying to record video with the sound turned off in the settings. You can also record video when an external microphone (any compatible one) is connected to the camera.

Link to post
Share on other sites

3 hours ago, ShakeyX said:


Thanks for your reply again,

I've just recorded with the audio turned off inside the camera and brought it into premier, interpreted at 25fps and there was no sound present what so ever.

You should also try to connect an external microphone. If there is no noise, it means that it is the built-in microphones.

Link to post
Share on other sites

  • 2 months later...

Back again with a brand new camera from a different supplier and, fresh out the box, it's the exact same problem. I've attached a video (crushed it to death so sorry about the video but it's the sound that's important)


You can even hear at the start of recording both times the sound isn't as audible (if at all) as it later becomes.


I'm currently waiting on an external mic for this cam so can of course test with the external (and imagine there will be no high pitched sound) but it can't be that I've got two separate cameras that both have the EXACT same fault? What are the chances?

Edited by ShakeyX
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Posts

    • I mostly see posterization artifacts, which are the result of lossy compressed RAW files (or bad jpeg conversion). Unfortunately, the A6400 doesn't offer uncompressed or lossless compressed RAW. The noise might indeed result from the smaller sensor than what you're used to. If you're not shooting at max aperture, you could try shooting at wider aperture and lower ISO. When you're not shooting at max aperture, fullframe versus APS-C shouldn't matter much in terms of ISO-performance combined with depth of field: at the same ISO and aperture value, fullframe offers better noise performance but with a narrower depth of field. This can be offset by choosing a larger aperture and lower ISO on the APS-C camera. If you want a fullframe camera the size of an A6400, try the A7C(ii).
    • ..unfortunately, the lighting was correct. The shot required deeper shadows. The K1 ff didnt have these banding issues [yes, I know the sensor is larger]. The film shots had details in the same light. The sony files, both the jpg and raw, had this banding/noise - with NO retouch or post adjustments [straight out of the camera]. the camera was purchased new a few years ago and I am trying to determine if there is something wrong, or the settings are wrong, or the camera just cant handle this kind of lighting [studio + softbox]. No shadow detail is one thing... banding/noise in the shadows is unacceptable. Does sony have a body this size that is FF ? Im wondering if that would make a difference..  dw
    • The root causes for banding are uneven lighting, incorrect exposure settings, or compression artefacts or certain kinds of artificial lighting, especially LED lights. Also the lens used plays a role, I have noticed it more with my sharpest lenses, looks like they outresolve the sensor when I have a uniform blue sky. There is more than one solution, and ultimately post-processing, but the root cause has to be identified first.
  • Topics

  • Create New...