Panasonic Lumix DMC-FZ200 - Fixing the Focus and the Exposure (AF;AE Lock)

101
Using the manual exposure mode allows you to take full control over
your image exposure.
We have now taken a look at the full and semi-automatic modes, and
concluded this section with a look at full manual control. I want to
consider next the effects of photostyles on image quality.
aperture
shutter speed
With ISO set, the exposure is balanced using a
combination of aperture and shutter speed
giving the 0EV reading on the meter scale