how do I block camera focus on a sim

[CHEEKS Quintessa]

I have been to several sims where you cannot cam in on somebody thru the radar how do you set your own land to be like that?

[Cinnamon Lohner]

You will find that in World - About Land - Options tab.   Uncheck  "Avatars on other parcels can see and chat with avatars on this parcel"

--Cinn

[Lindal Kidd]

Cinnamon is 100% correct!  Be aware that it works in reverse too...you won't be able to cam on avatars OUTSIDE your parcel.  Also, voice chat and gesture sounds are not blocked by this setting...you can do that in the Sound tab of About Land.