M. zoom, Zooming position, Flash power level (guide no.) – Nissin MG10 Wireless Flash with Air 10s Commander (Nikon) User Manual
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M. Zoom
Since the different focal length of the lens are suitable for different angles
of the shooting range, the focal length is getting shorter at the same sensors size.
Which means that the smaller focal length lens with larger angle in the view,
the flash area coverage will be larger.
Zooming
Position
24mm
28mm
35mm
50mm
70mm
85mm
105mm
Full
1/2
1/4
1/8
1/16
1/32
1/64
1/128
1/256
135mm
200mm
Without
zoom head
Flash Power Level (Guide No.)
80
57
40
28
20
14
10
7
5
28
20
14
10
7
5
3
2
2
74
52
37
26
18
13
9
6
5
69
49
34
24
17
12
9
6
4
64
45
32
23
16
11
8
6
4
60
42
30
21
15
11
7
5
4
56
39
28
20
14
10
7
5
3
47
33
23
17
12
8
6
4
3
41
29
20
14
10
7
5
4
3
38
27
19
13
10
7
5
3
2
Nissin MG10 Guide No. at manual exposure mode (ISO 100 in meters)
For the camera system we support, there are 4 main image sensor sizes:
35mm Full Frame format, APS-C format, 4/3 system format and 1” sensor format.