Example of a positive compensation
With very bright subjects, such as snow or a
beach, the exposure meter selects a relatively
short exposure time due to the extreme bright-
ness. As a result, the snow shows up in an aver-
age grey and any people in the photograph are
too dark: this is underexposure! To remedy this
problem, the exposure time needs to be extend-
ed or the diaphragm opened, i.e. a compensation
setting of e.g. + 2 needs to be made.
Example of a negative compensation
For very dark subjects that reflect very little
light, the exposure meter selects an exposure
time that is far too long. A black car will appear
grey: this is overexposure! The exposure time
needs to be shortened, i.e. a compensation set-
ting of e.g. – 1 is required.
140