Nikon D810 User Manual page 458

The SB-910, SB-900, SB-800, SB-700, SB-600, and SB-400 provide red-
eye reduction, while the SB-910, SB-900, SB-800, SB-700, SB-600, and
SU-800 provide AF-assist illumination with the following restrictions:
• SB-910 and SB-900: AF-assist illumination is available when
17–135 mm AF lenses are used with the focus points
shown at right.
• SB-800, SB-600, and SU-800: AF-assist
illumination is available when 24–105 mm
AF lenses are used with the focus points
shown at right.
• SB-700: AF-assist illumination is available when 24–
135 mm AF lenses are used with the focus points shown
at right.
Depending on the lens used and scene recorded, the in-focus indicator
(I) may be displayed when the subject is not in focus, or the camera
may be unable to focus and the shutter release will be disabled.
In exposure mode e, the maximum aperture (minimum f-number) is
limited according to ISO sensitivity, as shown below:
64 100
3.3
If the maximum aperture of the lens is smaller than given above, the
maximum value for aperture will be the maximum aperture of the lens.
434
Maximum aperture at ISO equivalent of:
200 400
4 4.8 5.6
24–34 mm
35–49 mm
50–105 mm
800 1600 3200
6.7 8 9.5
6400 12800
11 13