35
34
Detailed Operation
Exposure Compensation in Flash Photography
Exposure compensation lets you intentionally modify the correct
exposure. Exposure can be controlled when a subject of high reflectivity
is included in a picture, or when you want to create flash photographs
that are somewhat brighter or darker to match the subject or your creative
preferences. Some plus compensation may be necessary when the
background includes a mirror, white wall or other highly reflective surface.
Likewise, some minus compensation may be required when the
background is dark or includes subjects of low reflectivity.
You can compensate exposure on both the foreground subject and
background, or compensate exposure on only the subject.
•
To compensate exposure on both subject and background in TTL/
D-TTL auto flash mode
• In TTL/D-TTL auto flash mode (p. 25), use the camera’s exposure
compensation function (see your camera’s instruction manual).
• The exposure compensation value set on the camera is not displayed in the
SB-50DX LCD panel.
• Exposure compensation beyond the usable ISO film speed (sensitivity) range
for TTL/D-TTL auto flash (p. 21) cannot be performed. For example, making a
+3 compensation with ISO 100 film (sensitivity) corresponds to ISO 12, which
is out of the usable ISO speed (sensitivity) range (ISO 25 to 1600). With ISO
100 film (sensitivity), you can make plus compensation up to +2
(corresponding to ISO 25).
•
To compensate exposure on both subject and background in
Manual flash mode
• In Manual flash mode (p. 31), proper aperture (or standard aperture) for correct
exposure can be determined by the equation using the guide number (p. 33).
You can intentionally change the aperture to compensate exposure.
• To make the subject brighter, use a wider aperture (smaller f-number); to make the
subject darker, use a narrower aperture (larger f-number).
•
To compensate exposure on only the foreground subject
• In TTL/D-TTL auto flash mode, adjust the SB-50DX flash output level (flash
output level compensation, p. 35).
• Flash output level compensation is possible only when using cameras of
Group I, II, III or Nikon digital SLR cameras (p. 28).
Controlling background exposure in flash photography
By setting Slow Sync (p. 20) or by selecting a slower shutter speed than flash
sync speed in Shutter-Priority Auto or Manual exposure mode, you can bring
out background details using all of the available light. Available flash sync
modes and exposure modes vary depending on the camera being used. (See
your camera’s instruction manual.)
By adjusting flash output level, you can compensate exposure on a flash-
illuminated subject while keeping the same background exposure. Flash
output level compensation can be performed with cameras of Groups I, II
and III and Nikon digital SLR cameras.
• Flash output level compensation can be
performed with cameras of Groups I, II and III
and Nikon digital SLR cameras. With cameras of
Group III, set flash output level compensation on
the camera. (For details, see your camera’s
instruction manual.)
• In TTL/D-TTL auto flash mode, press the + or –
button to adjust flash output level. The LCD
panel shows the compensated value with
~
symbol.
• You can adjust the flash output level from –3 to
+3 EV in 1/3 steps (or in 1/6 steps with Nikon
digital SLR cameras).
• With a camera having the flash output level
compensation function (i.e., F80-series/N80-
series, F70-series/N70 or PRONEA 600i/
PRONEA 6i), you can set flash output level
compensation either on the camera or on the
SB-50DX. (Compensation range and step
depend on the camera. See your camera’s
instruction manual). Or, you can add
compensation values set on the camera to the
value set on the SB-50DX (or vice versa). Note
that, in this case, the SB-50DX LCD panel shows
the compensation value set on the SB-50DX
only.
• To cancel flash output level compensation, press
the + or – button until the value indication shows
"0" and
~
disappears in the LCD panel. (Turning
the SB-50DX off does not cancel the flash output
compensation.)
Flash Output Level Compensation
(See photos on p. 38.)
SB-50DX (E) 02.12.9 2:33 PM Page 34
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