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M/A (Autofocus with Manual Override)
To focus using autofocus with manual override (M/A):
Note: Infrared Film
When using the lens with infrared film, adjust focus manually.
After focusing, note the current focus distance (“4 m” in the
“Depth of Field” figure below) as shown by the focus distance
indicator, rotate the focus ring to align this distance with the
infrared compensation mark, and then attach a red filter.
■ Depth of Field
The depth-of-field indicators on the lens show the
approximate depth of field (see page 170 for more
information).
If the camera offers depth-of-field preview (stop
down), depth of field can also be previewed in the viewfinder.
z
Slide the lens focus-mode switch to M/A.
x
Focus.
If desired, autofocus can be over-ridden by rotating the
lens focus ring while the shutter-release button is pressed
halfway (or, if the camera is equipped with an AF-ON
button, while the AF-ON button is pressed).
To refocus
using autofocus, press the shutter-release button halfway
or press the AF-ON button again.
4
12 7
2
Focus distance markDepth-of-field
indicators
Infrared compensation mark