Extended User Manual – Irix 11 mm f/4.0
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HYPERFOCAL SCALE
In landscape, travel and similar types of photo-
graphy, it’s often benecial to maximize the depth
of eld in your images. This is best accomplished
by setting your focus at the closest point of sharp
focus for the chosen aperture setting. That point
is known as the hyperfocal distance. Even when
using the DoF scale, this distance can be dicult to
determine in the actual scene.