Custom / Personal functions

The EOS-1D Mark II has 22 custom functions and 26 personal functions. Custom and personal functions can be 'registered' into one of three 'custom function groups', the idea being that you can instantly switch between different sets of custom / personal functions for different situations or photographers.

All custom function screens on one contact sheet All custom function screens on one printable contact sheet

Custom functions can be programmed directly via the camera's C.Fn/P.Fn Menu. Personal Functions can only be enabled / disabled (turned ON or OFF), you can not change the value of a Personal Function in-camera, this must be done via the supplied Canon EOS Viewer Utility while connected to a computer.

Custom Functions

The only custom functions which have changed since the EOS-1D/1Ds are C.Fn 14 (E-TTL II) and C.Fn 21 (Drive speed priority AI Servo).

C.Fn Description Options
01 Finder display during exposure
Controls if exposure information and remaining buffer space is displayed during continuous shooting.
 • 0 - No viewfinder display
 • 1 - Finder display on
02 Shutter release without card
Disable the shutter button if there is no card inserted
 • 0 - Possible without card
 • 1 - Not possible
04 Shutter button / AE lock button
Controls the function of the shutter release and AE lock buttons
 • 0 - AF / AE lock
 • 1 - AE lock / AF
 • 2 - AF / AF Lock, no AE lock
 • 3 - AE / AF, no AE lock
05 Manual TV/AV set for M exposure
Select which controls set either shutter speed or aperture in manual exposure mode. Also changes the way auto bracketing is executed.
 • 0 - Tv = main, Av = quick
 • 1 - Tv= quick, Av = main
 • 2 - Tv= main, Av = quick w/o lens
 • 3 - Tv = quick, Av = main w/o lens
06 Exposure level increments
Select either third, half or full stop increments for shutter speed, aperture and exposure compensation
 • 0 - 1/3-stop set, 1/3-stop compen.
 • 1 - 1-stop set, 1/3-stop compen.
 • 2 - 1/2-stop set, 1/2-stop compen.
07 USM lens electronic MF
Allows you to control manual focusing on certain USM lenses
 • 0 - Turns on after one-shot AF
 • 1 - Turns off after one-shot AF
 • 2 - Always turned off
08 Top LCD panel / Back LCD panel
Controls what information is displayed on the top and back LCD panels
 • 0 - Remaining shots / File number
 • 1 - ISO / Remaining shots
 • 2 - ISO / File number
 • 3 - Shots in folder / Remaining shots
09 Auto bracketing sequence / cancel
Alter the AEB sequence. If Auto cancellation is selected bracketing will be cancelled if lens is changed or camera is powered off
 • 0 - 0,-,+ / Auto cancellation
 • 1 - 0,-,+ / No cancellation
 • 2 - -,0,+ / Auto cancellation
 • 3 - -,0,+ / No cancellation
10 AF point illumination
Controls the way the AF points are superimposed on the viewfinder focus screen
 • 0 - On
 • 1 - Off
 • 2 - On without dimming
 • 3 - Brighter
11 AF point selection method
Set the button / dial control combinations used to select AF points
 • 0 - AF point + main / quick dial
 • 1 - Exp. compen + main / quick dial
 • 2 - Assist + main / quick dial alone
 • 3 - FEL button + main / quick dial
12 Mirror lockup
Lock mirror up before main exposure, used to reduce vibration for long telephoto or macro shots. When enabled two presses of shutter release are required (or one with self timer).
 • 0 - Disable
 • 1 - Enable
13 Number of AF points / Spot metering
Set the number of selectable AF points and if spot metering follows the active AF point or is locked at the center of the viewfinder
 • 0 - 45 / Center AF point
 • 1 - 11 / Active AF point
 • 2 - 11 / Center AF point
 • 3 - 9 / Active AF point
14 E-TTL II
If set to Average the flash exposure is averaged over the Area AF ellipse
 • 0 - Evaluative
 • 1 - Average
15 Shutter curtain synchronization
Allows you to control where in the exposure the flash fires in a slow sync flash shot
 • 0 - 1st-curtain sync
 • 1 - 2nd-curtain sync
16 Safety shift in Av or Tv
If a subjects brightness suddenly changes and the current Av or Tv setting is unsuitable the camera will automatically change the setting to obtain a correct exposure
 • 0 - Disable
 • 1 - Enable
17 AF point activation area
Expands the active AF point either by one point or two points around the selected AF point
 • 0 - Single AF point
 • 1 - Expand 7 AF points
 • 2 - Automatic expand (max 13 AF points)
18 Switch to registered AF point
Defines what button combination must be pressed to return the AF point to a previously registered AF point
 • 0 - Assist + AF point button
 • 1 - Assist button
 • 2 - Only while pressing Assist button
19 Lens AF stop button function
Controls the function of the AF button on certain AF lenses
 • 0 - AF stop
 • 1 - AF start
 • 2 - AE lock while metering
 • 3 - AF point, MF - Auto, AF - Center
 • 4 - AF mode: one shot <> AI servo
 • 5 - IS start
20 AI servo tracking sensitivity
Sets the AI servo tracking speed, setting to slow can prevent it from being thrown off by obstructions passing between the camera and the subject
 • 0 - Standard
 • 1 - Slow
 • 2 - Moderately slow
 • 3 - Moderately fast
 • 4 - Fast
21 Drive speed priority AI Servo
When enabled a shot will be taken even if focus has not completely locked
 • 0 - Disable
 • 1 - Enable
00 Focusing Screen  • 0 - Ec-N,R
 • 1 - EC-A,B,C,CII,CIII,D,H,I,L (default)

Personal Functions

You can set personal functions through the Canon EOS Viewer Utility when the camera is connected to a computer. Once a personal function has been set it can be enabled / disabled from the camera.

P.Fn Description Options
01 Disable shooting modes
Allows you to disable any combination of the modes shown here *
 • Disable program AE
 • Disable shutter-priority AE
 • Disable aperture-priority AE
 • Disable bulb exposure
 • Disable manual exposure
02 Disable metering modes
Allows you to disable any combination of metering modes shown here *
 • Disable evaluative metering
 • Disable partial metering
 • Disable spot metering
 • Disable center-weighted average metering
03 Specify metering mode for manual exposure  • Evaluative
 • Partial metering
 • Spot metering
 • Center-weighted average metering
04 Set maximum and minimum shutter speeds  • Maximum - any up to 1/8000 sec
 • Minimum - any down to 30 sec
05 Set maximum and minimum apertures  • Maximum - any down to F91
 • Minimum - any up to F1
06 Registers and switches the shooting and metering mode  • Off
 • On
07 Repeats bracketing during continuous shooting  • Off
 • On
08 Set number of shots to be bracketed  • 2
 • 3
 • 5
 • 7
09 Change the bracketing sequence for C.Fn 9 2/3 to increased, standard, decreased  • Off
 • On
10 Retains the shift amount for program shift  • Off
 • On
14 Disables focus detection (search driving) by the lens drive  • Off
 • On
15 Disables the AF-assist beam from being emitted (by connected flash)  • Off
 • On
16 Enables automatic shooting when focus is achieved at the fixed point of focus when the shutter button is pressed fully  • Off
 • On
17 Disables automatic AF point selection  • Off
 • On
18 Enables automatic AF point selection when C.Fn 11-2 has been set  • Off
 • On
19 Sets continuous shooting speed  • Low speed: 3, 2, 1 fps
 • High speed: 8, 7, 6, 5, 4 fps
20 Limits number of shots during continuous shooting Numeric
21 Enables silent operation when the shutter button is OFF after picture taking  • Off
 • On
23 Change timers length *

 • 6 sec Timer
 • 16 sec Timer
 • Post-shutter release timer: 2 sec

24 Illuminate the LCD panels during Bulb exposure  • Off
 • On
25 Set default settings for camera reset (Various settings)
26 Shortened shutter release time lag  • Off
 • On
27 Reverse direction of dials  • Off
 • Main dial
 • Quick control dial
 • Both dials
28 Prevent exposure compensation with quick control dial  • Off
 • On
30 Quick Control on/off switch affects Main Dial too  • Off
 • On
31 Add original decision data
(adds digital 'signature' to image for use with data verification kit)
 • Off
 • On

* Indicates a multiple selection can be made