till now my automatic setting (little green square shape on the circular dial) has "AF" written on the screen which did 'exactly what it says on the tin' and automatically focused pictures for me. Now however for the past few weeks it has "MF" and requires you to manually focus the camera which is pants when I hand it over to someone who doesnt know how to use the camera manually when I'd like to be in the shot! I've looked at the manual and have absolutely no idea how to change it back to AF nor do I know how it changed in the first place! I've even searched how to reset the camera back to factory settings and all I can see is people advising to go onto the menu screen and go onto the tools bit with 2 on it and clicking clear all data - I dont have this as an option on my camera...on any of the menu parts!!

What do I do?!?!?!