(1)
At
some point most photojournalist take a picture that doesn’t come out exactly as
they expected, it’s either too dark or much lighter than they want it to be.
This might be because of a mistake with the metering, they’ve made an exposure
error or because the camera setting are wrong.
(2)
White
subject made grey: Camera metering system generally expect the brightness of a
scene to average out as a mudstone. It can be solved by the use of exposure
compensation control to increase the exposure above the value suggested by the
camera.
(3)
Camera
in the wrong exposure mode: This is a classic error that is a most likely to
happen. If your camera has a mode dial without a lock, These can be resolved by
getting into the habit of checking the mode before you start shooting.