Custom / Personal functions

The EOS-1D is probably the most configurable and flexible D-SLR to date, with no less than 21 custom functions and 28 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 21 EOS-1D custom function screens on one viewable contact sheet All 21 EOS-1D custom function screens on one printable contact sheet

Custom functions are controlled through the camera menu system, personal functions are set via the supplied TWAIN software and an IEEE 1394 (Firewire) connection.

Custom Functions

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 CF card
Disable the shutter button if there is no CF card inserted
 • 0 - Possible without CF card
 • 1 - Not possible
03 ISO speed expansion
Provides access to ISO 100 or 3200 (indicated as L or H respectively)
 • 0 - Standard ISO
 • 1 - Expanded sensitivity
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
 • 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 Auto reduction of fill flash
Automatically reduces flash power in daylight to produce natural fill-flash
 • 0 - Enable
 • 1 - Disable
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
00 Focusing Screen  • 0 - Ec-N,R
 • 1 - EC-A,B,C,CII,CIII,D,H,I,L (default)

Personal Functions

All 24 EOS-1D personal function screens on one viewable contact sheet All 24 EOS-1D personal function screens on one printable contact sheet

The functions below can only be set through the TWAIN software and an IEEE 1394 (Firewire) connection, captures of the dialog used to change these settings can be found later in the review.

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 depth-of-field 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 1/16000 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
13 Executes AI servo AF continuous shooting giving priority to the drive speed  • 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  • High-speed - 4, 5, 6, 7, 8 fps
 • Low speed - 3, 2, 1 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 *  • 10 sec
 • 2 sec
24 Illuminate the LCD panels during Bulb exposure  • Off
 • On
25 Set default settings for camera reset (Various settings)
27 Reverse direction of dials  • Off
 • Main dial
 • Quick control dial
 • Both dials
28 Prevent exposure compensation with quick control dial  • Off
 • On

* Indicates a multiple selection can be made