I heard that the firmware on mobile phones sold in Australia have the camera shutter sound built into them to prevent people talking photos/filming without consent. The sound on my old phone was pretty annoying and realised that I couldn't switch it off.

In terms of taking photos or video in public, in general I think it's legal unless you have caused some harm by taking the photo i.e. copyright in terms of a performance or nuisance in the case of taking pictures of other people.

I think I saw on the news that specific laws were introduced to make 'upskirting' illegal as well.

But what do you guys think about being filmed yourselves? I know for sure some places have security cameras. One time a girl told me she saw me walking in on the camera and I was a little shocked as I'd never thought of this before.