Extended User Manual – Irix 11 mm f/4.0
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FOCUS RING
The focusing ring moves the internal focusing
elements of the lens to achieve the desired focal
point. You can focus visually while looking at your
subject in the viewnder or LCD screen or by using
the distance, depth of eld or hyperfocal scales on
the lens barrel.
Your Irix lens allows you to set the focus at innity without the
need to look at the scale. While rotating the focus ring, innity is
indicated by a click and a denitive stop in the rotation.