Canon EOS 70DN Basic Instruction Manual page 394

3 Menu Function Settings
The asterisked image-recording quality settings do not match the
respective aspect ratio exactly.
The image area displayed for the asterisked aspect ratio is slightly larger
than the recorded area. Check the captured images on the LCD monitor
when shooting.
If you use a different camera to directly print images shot with this
camera in the 1:1 aspect ratio, the images may not be correctly printed.
Exposure simulationN
Exposure simulation simulates and displays how the brightness of
the actual image (exposure) will look.
Enable (g)
The displayed image brightness will be close to the actual
brightness (exposure) of the resulting image. If you set exposure
compensation, the image brightness will change accordingly.
During e (E/g)
Normally, the image is displayed at the standard brightness to
make the Live View image easy to see. The image will be
displayed close to the actual brightness (exposure) of the resulting
image only while you hold down the depth-of-field preview button.
Disable (E)
The image is displayed at the standard brightness to make the Live
View image easy to see. Even if you set exposure compensation,
the image is displayed at the standard brightness.
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