Manual Focus allows you to over ride your camera's auto focus to achieve the desired detail in every shot.
Using the slider in the manual focus function, you will be able to see your image coming in and out of focus. This is a handy feature when shooting an image you would like to get very close to an object, or when trying to mimic macro shots.
Push the joystick up to initiate the camera. Tap on the settings icon on the left side of the shutter button. Tap on the Manual Focus icon [(+)].
Tap on Auto to activate the slider. Using the slider, you can adjust your focus.
Tapping Auto again will bring you back to automatic Focus.