Using The Built-In Flash; Red-Eye Reduction - Nikon D50 User Manual

Using the Built-in Flash

The built-in fl ash can be used with any CPU lens with a focal length of 18–300 mm.
Note that the fl ash may be unable to light the entire subject if the following lenses
are not used at or above the minimum ranges given below:
AF-S DX ED 12–24 mm f/4G
AF-S ED 17–35 mm f/2.8D
AF-S DX IF ED 17–55 mm f/2.8G
AF ED 18–35 mm f/3.5–4.5D
AF-S VR ED 24–120 mm f/3.5–5.6G
AF-S ED 28–70 mm f/2.8D
AF-S VR 200–400 mm f/4G
AF-S 18–70 mm f/3.5–4.5G

Red-Eye Reduction

Some lenses may interfere with red-eye reduction by preventing the subject from
seeing the AF-assist illuminator.
108
Lens
AF 20–35 mm f/2.8D
Zoom position
20 mm
24 mm
20 mm, 24 mm
28 mm
35 mm
20 mm, 24 mm
28 mm
35 mm
45–55 mm
18 mm, 21 mm
24 mm
28–35 mm
20 mm
24 mm
28–35 mm
24 mm
28–120 mm
28 mm
35 mm
50–70 mm
200 mm
250 mm
300–400 mm
18 mm
24–70 mm
Minimum Range
2.5 m / 8´2˝
1.0 m / 3´3˝
2.5 m / 8´2˝
1.0 m / 3´3˝
0.6 m / 2´
2.5 m / 8´2˝
1.5 m / 4´11˝
0.7 m / 2´4˝
0.6 m / 2´
2.0 m / 6´7˝
0.7 m / 2´4˝
0.6 m / 2´
1.5 m / 4´11˝
1.0 m / 3´3˝
0.6 m / 2´
0.8 m / 2´7˝
0.6 m / 2´
3.0 m / 9´10˝
1.0 m / 3´3˝
0.6 m / 2´
4.0 m / 13´1˝
2.5 m / 8´2˝
0.6 m / 2´
1.0 m / 3´3˝
0.6 m / 2´