Pentax Optio WG-1 GPS Operating Manual page 36

When theimage i sunderexposed, thepart t otheleftiscutoff(dark
portions) and when theimage i soverexposed, thepart t otheright i scut
off(bright portions).
This camera hasafunction where overexposed areas a reindicated as
blinking r edand underexposed areas a sblinking yellow.
Understanding Contrast
The graph peaks gradually for images in which contrast is balanced. The
graph peaks on both sides but sinks in the middle for images with a large
difference in contrast and low amounts of mid-level brightness.