Canon 1D X - Manual (Page 331)

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3 Custom Function Settings
C.Fn6: Others
Add cropping information
If you set cropping information, vertical lines for the aspect ratio you have
set will appear on the Live View image. You can then compose the shot as
if you were shooting with a medium- or large-format camera (6x6 cm, 4x5
inch, etc.).
When you take a picture, the aspect ratio information for cropping the
image with the provided software will be appended to the image. (The
image is recorded to the card without being cropped.)
After the image is transferred to a personal computer, you can use Digital
Photo Professional (provided software, p.410) to easily crop the image to
the aspect ratio that was set.
OFF: Off (aspect ratio 3:2)
6:7: Aspect ratio 6:7
6:6: Aspect ratio 6:6 5:6: Aspect ratio 10:12
3:4: Aspect ratio 3:4 5:7: Aspect ratio 5:7
4:5: Aspect ratio 4:5
Timer duration
You can change how long a function setting associated with a button
remains in effect after you let go of that button. You can set the timer
duration within 0 sec. to 59 sec. or within 1 min. to 60 min.
6-sec. timer
This is how long the metering and AE lock are maintained.
16-sec. timer
This is how long the FE lock and multi-spot metering are maintained.
Timer after release
This is how long the metering is maintained after shutter release.
Normally, the timer length is 2 sec. after the shutter release. A longer
timer length will make it easier to keep using AE lock for the same
exposure.
The cropping information is recorded during Live View shooting,
viewfinder shooting, and still photo shooting during movie shooting.
Cropping information cannot be recorded to movies.
A 1 image with cropping information appended cannot be cropped
with the camera’s RAW image processing.
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