Since it looks like a professional camera rather than a smartphone camera, it's often used to express a love for photography itself. It's also good for someone whose hobby is photography to use when introducing themselves.

This emoji evokes the joy of capturing a moment with the 'click' of a shutter. It's a perfect emoji for reminiscing and sharing a specific moment from the past, much like the 'TBT (Throwback Thursday)' culture on Instagram.