Nikon D610 User Manual page 172

A
Shutter Speeds Available with the Built-in Flash
The following shutter speeds are available with the built-in flash.
Mode
i, P *, A *, k, p, s, w
n, 0
o
* Speeds as fast as
units when 1/250 s (Auto FP) or 1/200 s (Auto FP) is selected for Custom Setting e1 (Flash sync
speed, 0 234). When 1/250 s (Auto FP) is selected, shutter speeds as fast as
the built-in flash.
A
Flash Control Mode
The camera supports the following i-TTL flash control modes:
• i-TTL balanced fill-flash for digital SLR: Flash emits series of nearly invisible preflashes (monitor
preflashes) immediately before main flash. Preflashes reflected from objects in all areas of
frame are picked up by 2,016-pixel RGB sensor and are analyzed in combination with
range information from matrix metering system to adjust flash output for natural balance
between main subject and ambient background lighting. If type G, E, or D lens is used,
distance information is included when calculating flash output. Precision of calculation
can be increased for non-CPU lenses by providing lens data (focal length and maximum
aperture; see 0 172). Not available when spot metering is used.
• Standard i-TTL flash for digital SLR: Flash output adjusted to bring lighting in frame to standard
level; brightness of background is not taken into account. Recommended for shots in
which main subject is emphasized at expense of background details, or when exposure
compensation is used. Standard i-TTL flash for digital SLR is activated automatically when
spot metering is selected.
The flash control mode for the built-in flash can be selected using Custom Setting e3 (Flash
cntrl for built-in flash, 0 236). The information display shows the flash control mode for
the built-in flash as follows:
Manual
l
Repeating flash
Commander mode
146
Shutter speed
1 1
/ – /
200 60
1 1
/ – /
200 125
1
/ –1 s
200
1
/ s are available with optional SB-910, SB-900, SB-800, SB-700, and SB-600 flash
4,000
i-TTL
Mode
s S *
s M *
Flash sync
Shutter speed
1
/ –30 s
200
1
/ –30 s, A
200
1
/ s are available with
250
Auto FP (0 234)
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