Aspect Ratio; Exposure Simulation - Canon EOS 1Ds Mark III Instruction Manual

3 Custom Function Settings
C.Fn IV -14
During Live View shooting, vertical lines corresponding to the aspect ratio will
be displayed. You can thereby simulate framing for medium- and large-format
film sizes such as 6x6 cm, 6x4.5 cm, and 4x5 in. This aspect ratio information
will be appended automatically to the captured image. (The image will not
actually be saved to the memory card as a cropped image.) When the image is
transferred to a personal computer and the Digital Photo Professional (provided
software) is used, the image will be displayed in the aspect ratio you specified.
0: Off

1: Aspect ratio 6:6

2: Aspect ratio 3:4
3: Aspect ratio 4:5
Aspect ratio information will also be appended if you shoot through the
viewfinder.
During image playback on the camera, vertical lines for the respective
ratio will be displayed.
C.Fn IV -15
0: Off
1: On
Data for verifying whether the image is original or not is appended to the image
automatically. When the shooting info of an image appended with the verification
data is displayed (p.117), the <L> icon will appear. To verify whether the image
is original, the Original Data Security Kit OSK-E3 (sold separately) is required.
C.Fn IV -16
0: Disable (LCD auto adjust)
1: Enable (simulates exposure)
During Live View shooting, the real-time picture shows the brightness
corresponding to the exposure setting. This enables you to check the
image's exposure right before you take the picture.
When you press the depth-of-field preview button, the simulated
exposure is displayed regardless of the C.Fn IV -16 setting.
Even if 1 is set, the exposure simulation will not be displayed when an
external flash is used nor during bulb exposures.
178
Add aspect ratio information
4: Aspect ratio 6:7
5: Aspect ratio 10:12
6: Aspect ratio 5:7
Add original decision data
Live View exposure simulation