Canon EOS M Basic Instruction Manual page 239

Effective Flash Range
ISO speed
18mm (f/3.5)
100 1 - 2.6 / 3.3 - 8.5
200 1 - 3.6 / 3.3 - 11.8
400 1 - 5.1 / 3.3 - 16.7
800 1 - 7.3 / 3.3 - 23.9
1600 1 - 10.3 / 3.3 - 33.8
3200 1.3 - 14.5 / 4.3 - 47.6
6400 1.8 - 20.6 / 5.9 - 67.6 1.1 - 12.9 / 3.6 - 42.3 3.2 - 36.0 / 10.5 - 118
12800 2.6 - 29.1 / 8.5 - 95.4 1.6 - 18.2 / 5.2 - 59.7 4.5 - 50.9 / 14.8 - 167
Attach a Speedlite and turn on the
1
Speedlite.
Check that the <I> lamp lights.
2
Press the shutter button halfway.
3
Take the picture.
4
EF-M18-55mm f/3.5-5.6 IS STM
The Speedlite's power lamp will light
and recharging will start.
When it lights, you can shoot.
In Basic Zone modes (p.26), you will
not be able to release the shutter until
the <D> lamp lights.
On the bottom left of the LCD monitor,
check that the <D> icon is displayed.
When focus is achieved and you
press the shutter button completely,
the flash will fire for the picture.
[Approx. in meters/feet]
55mm (f/5.6)
1 - 1.6 / 3.3 - 5.2
1 - 2.3 / 3.3 - 7.5
1 - 3.2 / 3.3 - 10.5
1 - 4.5 / 3.3 - 14.8
1 - 6.4 / 3.3 - 21.0
1 - 9.1 / 3.3 - 29.8
D Using a Flash
EF-M22mm f/2 STM
22mm (f/2.0)
1 - 4.5 / 3.3 - 14.8
1 - 6.4 / 3.3 - 21.0
1 - 9.0 / 3.3 - 29.5
1.1 - 12.7 / 3.6 - 41.7
1.6 - 18.0 / 5.2 - 59.0
2.3 - 25.5 / 7.5 - 83.6
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