re installing camera app

help please. can someone give suggestions on how to re install a built in camera app?

try to reset the camera.it has option to reset to default settings...hope it helps

Try to download the pixelmaster camera app on playstore....

By re-install, did you mean you removed the app or just disabled it?
Either way, you should be able to re-install/re-enable the stock camera app by downloading from the Play Store.