Setting Custom Functions

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Depending on your shooting preferences and needs, you may immediately recognize functions and options that would make your shooting faster or more efficient. You may also find that combinations of functions are useful for specific shooting situations. Whether used separately or together, Custom Functions can significantly enhance your use of the 40D.

Table 4.9 C.Fn IV: Operations/Others

Option Number

Option Name

Description

C.Fn IV-1 Shutter button/AF-ON button

0

Metering + AF start

Default operation where you press the Shutter button halfway to lock focus and set exposure.

1

Metering + AF start/ AF stop

Allows you to press the AF-ON button to suspend autofocusing.

2

Metering start/ Metering + AF start

In AI Servo AF mode, pressing the AF-ON button momentarily stops autofocusing to prevent the focus from being thrown off when an object passes between the lens and the subject. Releasing the button resumes autofocusing. The camera sets exposure at the moment the shutter is released.

3

AE lock/ Metering + AF start

With this option, you can meter one part of the scene but focus on another part of the scene. You press the AF-ON button to meter and autofocus, and then press the Shutter button halfway to set AE Lock.

4

Metering + AF start/disable

Disables the use of the AF-ON button.

C.Fn IV-2 AF-ON/AE lock button switch

0

Disable

The buttons operate normally with AF-ON setting focus and AE Lock setting exposure on the area of the scene that you meter.

1

Enable

The AF-ON button sets AE Lock on the area of the scene that you meter, and the AE Lock button initiates focusing.

C.Fn IV-3 SET button when shooting

0

Normal (disabled)

Standard Set button function so that pressing the button confirms choices and opens submenus.

1

Change quality

Pressing the Set button while shooting displays the Image recording quality menu on the LCD. You can then change the image quality setting using the Quick Control dial. The Set button continues to perform its default functions with menus and submenus. If you often change the image quality,

then this is a useful option to select.

then this is a useful option to select.

Continued

Table 4.9 (continued)

Option Number

Option Name

Description

2

Change picture style

Pressing the Set button displays the Picture Style selection screen on the LCD. Then you can use the Quick Control dial to select the Picture Style and press the Set button to confirm the selection. This option is somewhat dubious given the Picture Style button on the back of the camera. Option 1 seems the most sensible use of this function to avoid redundancy with other back-of-the-camera buttons.

3

Menu display

Pressing the Set button displays the camera menu on the LCD. This option duplicates the function of the Menu button but may be handier due to the size and location of the Set button.

4

Image replay

Pressing the Set button starts image playback. This option duplicates the function of the Playback (>) button. Again, size and location of the Set button are the reasons to set this option.

C.Fn IV-4 Dial direction during Tv/Av

0

Normal

When you turn the Main dial clockwise in Tv or Av, the shutter speed or aperture increases. In Manual mode, the same changes occur using the Main and Quick Control dials for shutter speed and aperture, respectively.

l

Reverse direction

The direction is reversed so that turning the Main dial clockwise in Tv or Av modes causes the shutter speed or aperture to decrease, respectively. In Manual mode, the direction is reversed for the Main and Quick Control dials except for setting exposure compensation.

C.Fn IV-5 Focusing screen

0

Ee-A

Standard Precision Matte. The installed focusing screen that offers good viewfinder brightness and good manual focusing.

l

Ee-D

Precision Matte with grid. This screen features five vertical lines and three horizontal lines to help keep lines square during image composition.

Option Number Option Name Description

2

Ee-S

Super Precision Matte. Designed to make manual

focusing easier with f/2.8 and faster lenses. The

viewfinder is darker using this screen with slower

lenses.

C.Fn IV-6 Add original decision data

C.Fn IV-6 Add original decision data

0 Off No verification data is appended.

1 On Appends data to verify that the image is original.

During image playback, a lock icon denotes verification data. To verify the image originality, the optional Original Data Security Kit OSK-E3 is required.

C.Fn IV-7 Live View exposure simulation

0

Disable (LCD

This view shows the image normally with no

auto adjust)

exposure simulation.

1 Enable The Live View display on the LCD updates

(simulates continuously to preview the actual exposure exposure) settings. The view is not as accurate in very bright and very low light, and it doesn't work, of course, for flash and Bulb exposures. Simulation also works if you're shooting Live View with the camera tethered (cabled) to a computer.

To set a Custom Function, follow these steps:

1. Set the Mode dial to a Creative Zone mode.

2. Press the Menu button, and then press the Jump button until the Custom Functions (orange) menu is displayed.

3. Turn the Quick Control dial clockwise to highlight the Custom Functions (C.Fn) group you want, and then press the

Set button. The Custom Functions screen with the function group that you selected appears.

4. Turn the Quick Control dial to highlight the Custom Function number you want, and then press the Set button. The Custom Function number is displayed in a small box to the upper right of the screen. When you press the Set button, the Custom Function option control is activated.

5. Turn the Quick Control dial to highlight the option you want, and then press the Set button.

You can refer to the previous tables in this section of the chapter to select the function number that you want. Repeat Steps 2 through 4 to select other Custom Function groups, functions, and options.

6. Press the Menu button to return to the Custom Functions (orange) menu, or lightly press the Shutter button to return to shooting.

If you want to reset one of the Custom Functions, repeat these steps to change it to another setting or the default setting.

If you want to restore the Custom Function options to the camera's default settings except C.Fn IV-5 for the focusing screen, follow these steps:

1. Set the camera Mode dial to a Creative Zone mode such as P, Tv, Av, or M.

2. Press the Menu button, and then press the Jump button until the Custom Functions (orange) menu is displayed.

3. Turn the Quick Control dial to highlight Clear all Custom Func. (C.Fn), and then press the Set button. The Clear all Custom Func. (C.Fn) screen appears.

4. Turn the Quick Control dial to highlight OK, and then press the Set button. The Custom Functions screen appears. Press the Shutter button lightly to return to shooting.

Note If you change the focusing screen, be sure to set C.Fn IV-5 to match the screen that you install. The function you set remains in effect until you manually change it.

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