Nikon D7500 Menu Manual page 234

❚❚ The Built-in Flash
The built-in flash can be used with lenses with focal lengths of
16–300 mm, although in some cases the flash may be unable to
entirely light the subject at some ranges or focal lengths due to
shadows cast by the lens (see the illustration below), while
lenses that block the subject's view of the red-eye reduction
lamp may interfere with red-eye reduction. Peripheral
illumination may drop at focal lengths under 16 mm. Remove
lens hoods to prevent shadows
The flash has a minimum range of about 0.6 m and can not be
used in the macro range of macro zoom lenses. When DX
(24×16) is selected for Choose image area, the flash may be
unable to light the entire subject with the following lenses at
ranges less than those given below:
AF-S DX NIKKOR 10–24mm
f/3.5–4.5G ED
AF-S DX Zoom-Nikkor 12–24mm
f/4G IF-ED
AF-S DX NIKKOR 16–80mm
f/2.8–4E ED VR
234 Technical Notes
Shadow
Lens
.
Vignetting
Zoom position
20 mm
24 mm
18 mm
20 mm
24 mm
16 mm
24–80 mm
Minimum distance
without vignetting
1.0 m/3 ft 4 in.
No vignetting
1.5 m/5 ft
1.0 m/3 ft 4 in.
No vignetting
1.5 m/5 ft
No vignetting