Nikon D7500 Reference Manual - English - Page 208

Notes on Optional Flash Units, SB-80DX, and SB-50DX manuals.

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D Notes on Optional Flash Units Refer to the flash unit manual for detailed instructions. If the flash unit supports CLS, refer to the section on CLS-compatible digital SLR cameras. The D7500 is not included in the "digital SLR" category in the SB-80DX, SB-28DX, and SB-50DX manuals. If an optional flash unit is attached in shooting modes other than j, %, and u, the flash will fire with every shot, even in modes in which the built-in flash can not be used. i-TTL flash control can be used at ISO sensitivities between 100 and 12800. At values over 12800, the desired results may not be achieved at some ranges or aperture settings. If the flash-ready indicator (M) flashes for about three seconds after a photograph is taken in i-TTL or non-TTL auto mode, the flash has fired at full power and the photograph may be underexposed (CLS-compatible flash units only; for information on the exposure and flash charge indicators on other units, see the manual provided with the flash). In i-TTL and auto aperture (qA) flash control modes, the flash compensation selected with the optional flash unit or the Flash control option in the photo shooting menu is added to the flash compensation selected with the M (Y) button and command dial. When an SC-series 17, 28, or 29 sync cable is used for off-camera flash photography, correct exposure may not be achieved in i-TTL mode. We recommend that you select standard i-TTL fill-flash control. Take a test shot and view the results in the monitor. In i-TTL, use the flash panel or bounce adapter provided with the flash unit. Do not use other panels such as diffusion panels, as this may produce incorrect exposure. 208 Optional Flash Units

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208
Optional Flash Units
D
Notes on Optional Flash Units
Refer to the flash unit manual for detailed instructions. If the flash unit
supports CLS, refer to the section on CLS-compatible digital SLR
cameras. The D7500 is not included in the “digital SLR” category in the
SB-80DX, SB-28DX, and SB-50DX manuals.
If an optional flash unit is attached in shooting modes other than
j
,
%
,
and
u
, the flash will fire with every shot, even in modes in which the
built-in flash can not be used.
i-TTL flash control can be used at ISO sensitivities between 100 and
12800. At values over 12800, the desired results may not be achieved
at some ranges or aperture settings. If the flash-ready indicator (
M
)
flashes for about three seconds after a photograph is taken in i-TTL or
non-TTL auto mode, the flash has fired at full power and the
photograph may be underexposed (CLS-compatible flash units only;
for information on the exposure and flash charge indicators on other
units, see the manual provided with the flash).
In i-TTL and auto aperture (
q
A) flash control modes, the flash
compensation selected with the optional flash unit or the
Flash
control
option in the photo shooting menu is added to the flash
compensation selected with the
M
(
Y
) button and command dial.
When an SC-series 17, 28, or 29 sync cable is used for off-camera flash
photography, correct exposure may not be achieved in i-TTL mode. We
recommend that you select standard i-TTL fill-flash control. Take a test
shot and view the results in the monitor.
In i-TTL, use the flash panel or bounce adapter provided with the flash
unit. Do not use other panels such as diffusion panels, as this may
produce incorrect exposure.