Exposure - Canon EOS M2 Instruction Manual

ISO speed during manual-exposure shooting

With [Auto], the ISO speed will be set automatically within ISO 100 - ISO
6400.

You can set the ISO speed manually within ISO 100 - ISO 6400 in whole-
stop increments. Under [54: Custom Functions (C.Fn)], if [2: ISO
expansion] is set to [1: On], the manual setting range will expand so you
can also select "H" (equivalent to ISO 12800).

Under [54: Custom Functions (C.Fn)], if [3: Highlight tone priority] is
set to [1: Enable], the ISO speed will be ISO 200 - ISO 6400.

Since shooting a movie at ISO 12800 may result in much noise, it is
designated as an expanded ISO speed (displayed as "H").

If [2: ISO expansion] under [54: Custom Functions (C.Fn)] is set to [1: On]
and you switch to movie shooting, the manual setting range's maximum will
be H (equivalent to ISO 12800). Even if you switch back to still photo
shooting, the ISO speed will not revert to the original setting.

You cannot set exposure compensation.

Changing the shutter speed or aperture during movie shooting is not
recommended since the changes in the exposure will be recorded.

If you change the shutter speed while shooting under fluorescent or LED
lighting, image flicker may be recorded.

When ISO Auto is set, you can press the <A> button or tap [A] on the
screen to lock the ISO speed.

If you press the <A> button and recompose the shot, you can see the
exposure level difference on the exposure level indicator (p.180) compared to
when the <A> button was pressed.
 When [A1: zHistogram disp] is set to a setting other than [Disable], you
can press the <B> button to display the histogram. However, the
histogram will not be displayed while the shutter button is pressed completely.

When shooting a movie of a moving subject, a shutter speed of 1/30 sec. to
1/125 sec. is recommended. The faster the shutter speed, the less smooth the
subject's movement will look.
k Shooting Movies
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