Looks like you did some research. I was aware of the general law around my neck of the woods but still checked before I posted and came across the same link you found. To confirm further, checked some links relevant to Victoria.Security cameras
An organisation or agency that uses a surveillance device, such as a security camera or CCTV, generally must follow several laws.www.oaic.gov.au
From the looks of this, then yeah, you've nothing to worry about even if you're filming in other people's gardens. Bloody hell lol
The premise is, that if you are in a public place it's not private and you can be expected to be seen. Under our stalking & family violence laws, your rights might be infringed and for good reason. Generally though, for good, decent, honest, law-abiding individuals setting up security cameras, even covertly, is not a crime.
