Nikon R1 Instruction Manual page 97

 In Manual flash mode
In Auto FP High-Speed Sync in Manual flash mode, the SB-R200's flash output level may be
extremely low when the manual flash output level is set to a low value. However, this is not a
malfunction. Flash output level may also vary depending on the subject matter conditions.
Guide number in Auto FP High-Speed Sync using the SB-R200 (m/ft)
Flash output
level
25
1.4/4.6
M1/1
1.0/3.2
M1/2
0.7/2.3
M1/4
0.5/1.6
M1/8
0.3/1.1
M1/16
0.2/0.8
M1/32
0.1/0.5
M1/64
• The guide number in Auto FP High-Speed Sync above is applicable when the shutter
speed is set at 1/500 sec.
• The guide number in Auto FP High-Speed Sync above varies according to shutter speed.
For example, when the shutter speed changes from 1/500 sec. to 1/1000 sec., the guide
number decreases by 1 EV. This means that the higher the shutter speed, the lower the
guide number.
ISO sensitivity
50 100
2.0/6.5 2.8/9.2
1.4/4.6 2.0/6.5
1.0/3.2 1.4/4.6
0.7/2.3 1.0/3.2
0.5/1.6 0.7/2.3
0.3/1.1 0.5/1.6
0.2/0.8 0.3/1.1
200 400
4.0/13.1 5.6/18.5
2.8/9.2 4.0/13.1
2.0/6.5 2.8/9.2
1.4/4.6 2.0/6.5
1.0/3.2 1.4/4.6
0.7/2.3 1.0/3.2
0.5/1.6 0.7/2.3
800 1600
8.0/26.2 11.3/37.1
5.6/18.5 8.0/26.2
4.0/13.1 5.6/18.5
2.8/9.2 4.0/13.1
2.0/6.5 2.8/9.2
1.4/4.6 2.0/6.5
1.0/3.2 1.4/4.6
97