Nikon 4804 ユーザーズマニュアル
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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)
• 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.
Flash output
level
ISO sensitivity
25
50
100
200
400
800
1600
M1/1
1.4/4.6
2.0/6.5
2.8/9.2
4.0/13.1
5.6/18.5
8.0/26.2 11.3/37.1
M1/2
1.0/3.2
1.4/4.6
2.0/6.5
2.8/9.2
4.0/13.1
5.6/18.5
8.0/26.2
M1/4
0.7/2.3
1.0/3.2
1.4/4.6
2.0/6.5
2.8/9.2
4.0/13.1
5.6/18.5
M1/8
0.5/1.6
0.7/2.3
1.0/3.2
1.4/4.6
2.0/6.5
2.8/9.2
4.0/13.1
M1/16
0.3/1.1
0.5/1.6
0.7/2.3
1.0/3.2
1.4/4.6
2.0/6.5
2.8/9.2
M1/32
0.2/0.8
0.3/1.1
0.5/1.6
0.7/2.3
1.0/3.2
1.4/4.6
2.0/6.5
M1/64
0.1/0.5
0.2/0.8
0.3/1.1
0.5/1.6
0.7/2.3
1.0/3.2
1.4/4.6