If you don’t want a file uploader, your camera capture plugin would need to directly upload to AWS S3.
The alternative is let the camera plugin upload to Bubble storage, then have an extra workflow run after capture with this plugin ☁ ᴺᴱᵂ ᴾᴸᵁᴳᴵᴺ Cloud2Cloud File Transfer (incl. Large File Support) to transfer it from Bubble to AWS S3, then you would delete the Bubble file once the webhook come back that it was successful.
I am not a fan of doing double work like this but if that is the only way without custom plugin then 