Hi, how do I reset my lumix fz70 back to factory settings please?

Your photos all have a date stamp as well as all the camera settings when shot and are revealed in your editing software. I don't know how to have the date printed on the face of the photo. You can download the 226 page manual at http://panasonic.ca/viewing/ALL/DMC-FZ70P/OI/vqt5b76/vqt5b76.pdf

Enjoy your camera

Instructions for this should be in the manual

Google it, and look at the images

we do not sell anything so you will have to ask this question on a site that sells things

Zoom 1x to 3x sounds like the limits of optical zoom. The other zoom option may be digital zoom, which merely interpolates pixels to give the impression of a larger picture, and, as you reach the limit of the zoom, the picture quality may be so degraded that the image is unusable.

look in menu and cut photo sizes also any thing you set as fine such sharpness put to standard .

Try this link:
http://service.us.panasonic.com/OPERMANPDF/DMCFZ70_ADV.PDF

Yes, the reset instructions can be found in the below link.

http://service.us.panasonic.com/OPERMANPDF/DMCFZ70_ADV.PDF#page=70

Remove the battery for 20 mins. replace the battery.turn on and go to the camera's Menu scroll through the settings to the Date & Time, set the current date and time.

Enter the SETUP menu and select RESET. You'll be prompted to reset two sections. Answer YES to both and everything that can be set to default will go back to the factory default state.