Nikon D50 D50 User's Manual - Page 137

Metering, Exposure Program Mode P, Flash Control

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Technical Notes-Appendix Aperture Exposure Program (Mode P) The exposure program for mode P is shown in the following graph: F (lens focal length) ͨ 55 mm 55  F ͨ 135 mm F Œ 135 mm Shutter speed The maximum and minimum values for EV vary with sensitivity (ISO equivalency); the above graph assumes a sensitivity of ISO 200 equivalent. When matrix metering is used, values over 171/3 EV are reduced to 171/3 EV. Flash Control ( 36, 109) The following types of flash control are supported when a CPU lens is used in combination with the built-in flash or an optional SB-800 or SB-600 Speedlight: i-TTL Balanced Fill-Flash for Digital SLR: Flash output is adjusted for a natural balance between the main subject and the background. Standard i-TTL Flash for Digital SLR: Flash output is adjusted for the main subject; the brightness of the background is not taken into account. Recommended for shots in which the main subject is emphasized at the expense of background details, or when exposure compensation is used. Standard i-TTL flash control is used when Spot is selected for Custom Setting 13 (Metering; 96) or exposure mode M is selected when the built-in flash is used. i-TTL balanced fill-flash for digital SLR is used in all other cases. 127

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127
Technical Notes—Appendix
Exposure Program (Mode P)
The exposure program for mode
P
is shown in the following graph:
F (lens focal length)
±
55 mm
55
²
F
±
135 mm
F
³
135 mm
Shutter speed
The maximum and minimum values for EV vary with sensitivity (ISO equivalency); the
above graph assumes a sensitivity of ISO 200 equivalent.
When matrix metering is
used, values over 17
1
/
3
EV are reduced to 17
1
/
3
EV.
Flash Control (
36, 109)
The following types of flash control are supported when a CPU lens is used
in combination with the built-in flash or an optional SB-800 or SB-600
Speedlight:
i-TTL Balanced Fill-Flash for Digital SLR
: Flash output is adjusted for a natural bal-
ance between the main subject and the background.
Standard i-TTL Flash for Digital SLR
: Flash output is adjusted for the main subject;
the brightness of the background is not taken into account.
Recommended for
shots in which the main subject is emphasized at the expense of background de-
tails, or when exposure compensation is used.
Standard i-TTL flash control is used when
Spot
is selected for Custom
Setting 13 (
Metering
;
96) or exposure mode
M
is selected when the
built-in flash is used.
i-TTL balanced fill-flash for digital SLR is used in all
other cases.
Aperture