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The camera’s AF sensor has 45 AF points. The illustration below shows
the AF sensor pattern corresponding to each AF point. When using
lenses with a maximum aperture of f/2.8 or faster, high-precision AF is
possible at the viewfinder center.
AF Sensor
This focusing sensor is geared to obtain higher precision
focusing for lenses with a maximum aperture of f/2.8 or
faster. A diagonal cross pattern makes it easier to focus on
the subjects that may be difficult to focus. It is provided at
the center AF point.
These focusing sensors are geared for lenses with a
maximum aperture of f/5.6 or faster (and some supporting
f/8). Since they have a horizontal pattern, they can detect
vertical lines. They cover all 45 AF points.
These focusing sensors are geared for lenses with a
maximum aperture of f/5.6 or faster (and some supporting
f/8). Since they have a vertical pattern, they can detect
horizontal lines. They cover all 45 AF points.
Depending on the lens used, the number of usable AF points, AF point
patterns, Area AF frame shape, etc. vary. For details, see “Lenses and
Usable AF Points” on page 131.
Diagram
Cross-type focusing: f/5.6 ve f/5.6 horizontal
(some also supporting f/8)
Dual cross-type focusing:
f/2.8 right di f/2.8 left diagonal
f/5.6 ve f/5.6 horizontal
(also supporting f/8)
