The Complete Manual of Typography: A Guide to Setting Perfect Type, Second Edition

chapter 18 Resolution Issues:

Print, Screen, and Web

How you set type should depend on how it will eventually be seen. The

higher the resolution of the output device, the more finely the type is rendered

and the finer your control over how each character is positioned. As resolution

decreases, your ability to refine the spacing of type diminishes along with it.

In fact, when type that’s been set for output at high resolution is reproduced

at low resolutions, your efforts may have made it look worse than it otherwise

would. Typesetting is a resolution-dependent practice, and this chapter looks

at the adaptations you have to make to accommodate t ...