Nikon SB-28 - Manual (Page 19)

The SB-28 has six zoom-head position settings: 24mm, 28mm,
35mm, 50mm, 70mm and 85mm. (The zoom head is set to either
18mm or 20mm when the built-in wide flash adapter is used.)
Cameras in Groups I and II with Nikkor lenses with a
built-in CPU
1 The zoom head is automatically adjusted.
• Automatic zoom-head positioning is not possible if a small M appears above
the ZOOM on the LCD panel. Press the
' button several times until the
M disappears.
2 After automatic adjustment, make sure the zoom-head position
on the LCD panel matches the focal length of the lens in use.
—With a zoom lens, the zoom head automatically adjusts within the range of
24mm to 85mm. When the focal length exceeds the SB-28's available range,
the zoom-head adjusts to the closest wideangle or telephoto setting of the
lens in use.
19
Adjusting the zoom-head position