Kerning pg 102
Kerning is the adjustment of space between two letter. My question has to do with optical kerning and metric kerning and how is it generally used?
So metric kerning is the built in spacing between letters in a typeface while optical kerning spaces letters according to shape and form. So metric kerning is best used for large bodies of text. Headlines and mixed typefaces can usually look better with optical kerning.
example:
Kerning is all about the visual aesthetic. Indesign usually makes the choice for you how the kerning looks best in optical. Metric is just a standard and manual kerning is done by you. Optical kerning can also be a good fit for novelty fonts because they don’t really have kerning pairs which are pairs of letters that are usually pushed and fit together like “VA” and “TO”.
http://www.creativepro.com/blog/typetalk-metrics-versus-optical-kerning