List of custom functions available on the EOS 1D Mark II, EOS 1D Mark II N, and EOS 1Ds Mark II.

Article ID: ART158705

Date published: 06/09/2015

Date last updated: 08/18/2015

Description

Solution

C.Fn-01				Viewfinder display during exposure
1:	Displays the exposure information and number of remaining shots during continuous shooting.
C.Fn-02				Shutter release without card
1:	The shutter button will not work without a memory card in the camera. This prevents shooting without a memory card. If there is no memory card and you press the shutter button, Card" will blink on the top LCD panel and in the viewfinder. It indicates that C.Fn-02-1 is in effect.
C.Fn-04				Shutter button/AE lock button
1:	You can focus at one location and obtain AE lock at another location in the scene. Press the *<>** button to autofocus and press the shutter button halfway to attain AE lock.
2:	In the AI Servo AF mode, you can press the <*> button to stop the AF operation momentarily. This prevents the AF from being thrown off by any obstacle passing between the camera and subject. The exposure is set at the moment the picture is taken.
3:	This is useful for subjects which keep moving and stopping repeatedly. In the AI Servo AF mode, you can press the <*> button to start or stop the AI Servo AF operation. The exposure is set at the moment the picture is taken. Thus, the focusing and exposure will always be at the optimum point as you wait for the decisive moment.
	C.Fn-04 and C.Fn-19-0/1/2 have AF start/stop and AE lock functions. If you have set these Custom Functions and you execute Custom Function operations, the latter operation will not work. The only exception will be when AF stop is executed after AF start.
C.Fn-05				Manual Tv/Av set. for M exp.
1:	This is convenient when you often have to change the aperture during studio shooting with studio flash units. Also, when you use AEB in the manual exposure mode, the shutter speed can stay fixed while only the aperture is shifted for AEB. To set the shutter speed, hold down the <> button (or the <> button if C.Fn-11-1/2 is set) and turn the <> dial.
2:	You set the shutter speed and aperture in the same way as with C.Fn-05-0. And you can still set the aperture even while the lens is detached from the camera. Convenient especially if you want to use a super telephoto lens with more than one EOS-1D Mark II camera body.
3:	You set the shutter speed and aperture in the same way as with C.Fn-05-1. And you can still set the aperture even while the lens is detached from the camera.
C.Fn-06				Exposure level increments
1:	Sets full-stop increments for the shutter speed and aperture.
2:	Sets 1/2-stop increments for the shutter speed, aperture, and exposure compensation.
	The exposure compensation will be displayed in the viewfinder and on the LCD panel as shown below.
	When C.Fn-06-2 is set, AEB with the ISO speed will be disabled.
C.Fn-07				USM lens electronic MF
1:	This prevents the focus from being thrown off by inadvertent turning of the focusing ring after One-Shot AF. With C.Fn-07-1 and C.Fn-07-2, manual focusing is possible with the lens focus mode switch set to <MF>.
2:	Electronic manual focusing is disabled in the AF mode.

		Custom Function No.		C.Fn-04
			Setting	0, 2	1, 3
		C.Fn-07	0	X/O	O/O
			1	X/X	O/X
			2	X/X	X/X
		* When in focus/Not in focus. O: Enabled X: Disabled

C.Fn-08				Top LCD panel / Rear LCD panel
1:	Displays the ISO speed at all times. The number of remaining shots on the top LCD panel is displayed with more digits.
2:	Displays the ISO speed instead of the number of remaining shots. You can tell when the number of remaining shots is low by seeing a low maximum burst count displayed in the viewfinder during continuous shooting.
3:	Displays the number of images saved in the selected folder. The number of remaining shots on the top LCD panel is displayed with more digits. Images recorded in the RAW+JPEG mode are counted as 1 per shot.
	The ISO speed display in the viewfinder also changes in the same way.
C.Fn-09				Auto bracketing sequence / Auto cancel
	You can change the AEB sequence when you bracket with the shutter speed, aperture, or ISO speed. You can also change the white balance bracketing sequence. When "Auto cancellation" is set, bracketing will be canceled after you change the lens or turn the <> switch to <OFF>.
1:	The first bracketed shot is the standard exposure (or exposed with the standard white balance). This bracketing sequence can be repeated.
2:	Starts the bracketing sequence with the decreased level.
3:	Repeats the bracketing sequence starting with the decreased level.
C.Fn-10				AF point illumination
1:	The AF point does not light at all. Effective when it is ersome to see it light up.
2:	Prevents the dimmed lighting of C.Fn-10-0.
3:	Effective when the AF point lighting is difficult to see with C.Fn-10-0.
C.Fn-11				AF point selection method
1:	This reversed the functions of the <t> button and <> button.
2:	While exposure metering is active, turn the <> dial to select a horizontal AF point. (If C.Fn-13-3 has been set, select a peripheral AF point.) This is also possible while you press the shutter button halfway and during continuous shooting with AI Servo AF. The AF point selection stops at the extreme left, extreme right, top-most, and bottom-most AF points. During autofocusing, you can press the <> button to switch instantly to the automatic AF point selection mode. You can also select the AF point (including automatic AF point selection) with the same operation as C.Fn-11-1. If C.Fn-11-2 and C.Fn-18-1/2 have been set, select a vertical AF point by pressing the <> button and turning the <> dial.
3:	This reversed the functions of the <> button and <FEL> button.
C.Fn-12				Mirror lockup
1:	Effective for close-up and telephoto shots to prevent camera shake caused by the mirror's reflex action.
C.Fn-13				Number of AF points/Spot metering
1:	The selectable AF points are limited to 11. Spot metering is linked to the active AF point.
2:	The selectable AF points are limited to 11. Spot metering is linked to the center AF point.
3:	The selectable AF points are limited to 9. Spot metering is linked to the active AF point.
	The metering mode must be set to spot metering before it can be linked to the AF point. If C.Fn-13-1/2 is set or cleared, the registered AF point will be replaced by the center AF point.
	Any metering mode besides spot metering can be used. With C.Fn-13-1/2/3, all 45 AF points will be available for automatic selection. With C.Fn-13-1/3, FE lock is possible with any AF point you select.
C.Fn-14				E-TTL II autoflash system
1:	Fully automatic flash photography for all conditions, from low light to daylight fill-flash.
2:	The flash exposure will be averaged over the Area AF ellipse. Since automatic flash exposure compensation will not be executed, you may have to set it yourself depending on the scene. This also applies if you use FE lock.
C.Fn-15				Shutter curtain synchronization
1:	By using a slow sync speed, you can create a light trail following a moving subject. The flash fires right before the shutter closes. This Custom Function can be used to obtain 2nd-curtain sync effects even with EX-series Speedlites which do not have this feature. If an EX-series Speedlite having this feature is set for 2nd-curtain sync, it will override this Custom Function.
C.Fn-16				Safety shift setting
	Safety shift can be set for the shutter-priority AE and aperture-priority AE modes.
1:	If the subject's brightness changes suddenly and the current shutter-priority AE or aperture-priority AE setting becomes unsuitable, the shutter speed or aperture is shifted to obtain a suitable exposure automatically.
C.Fn-17				AF point activation area
1:	The AF point activation area expands by one point all around the manually-selected AF point. A total of 7 AF points become active. This setting is effective for when only one manually-selected AF point is unable to focus track a subject moving erratically.
2:	The camera automatically sets the AF point activation area to 7 or 13 points to suit the lens focal length and AF mode.This is effective when the subject?s movement is unpredictable.
	The AF point activation area centers on the selected AF point. Therefore, if a peripheral AF point is selected, the AF point activation area will be smaller as shown below.
	7-point activation area					: Selected AF Point : Activation area
	13-point activation area
	Setting C.Fn-13 will also expand the AF point activation area.
C.Fn-18				Switch to the registered AF point
1:	Press the <> button to switch to the registered AF point.
2:	Switch to the registered AF point only while you press the <> button. When you release the button, the AF point selected previously becomes active again. You can thereby easily switch between the selected AF point and registered AF point.
	If C.Fn-04-1/3 is also set, you can press the <> button to switch to the registered AF point and start the AF at the same time.
C.Fn-19				Lens AF stop button function
1:	AF operates only while the AF stop button is pressed. While the button is pressed, AF operation with the camera is disabled.
2:	When the button is pressed while metering is still active, AE lock takes effect. Convenient when you want to focus and meter separately.
3:	In the manual AF point selection mode, holding down the button switches to automatic AF point selection (among 45 AF points). Holding down the button switches from manual AF point selection to automatic AF point selection instantly. Convenient when you are no longer able to focus track a moving subject with a manually selected AF point in the AI Servo AF mode. In the automatic AF point selection mode, the center AF point is selected only while you hold down the button.
4:	In the One-Shot AF mode, the camera switches to AI Servo AF mode only while you hold down the button. In the AI Servo AF mode, the camera switches to One-Shot AF mode only while you hold down the button. Convenient when you need to keep switching between One-Shot AF and AI Servo AF for a subject which keeps moving and stopping.
5:	With the lens' IS switch already ON, the Image Stabilizer operates only while you press the button.
	The AF stop button is provided only on IS super telephoto lenses.
C.Fn-20				AI Servo tracking sensitivity
1 or 2:	Prevents the autofocus from being thrown off by any obstacle passing between the camera and subject.
3 or 4:	Effective when you want to consecutively photograph multiple subjects located at random distances.
	This Custom Function does not affect the AI Servo AF tracking speed.
C.Fn-21				AI Servo continuous shooting and shooting priority
1:	Shooting is possible even while focus has not been achieved. Even though the focus is not quite sharp, at least you will have a picture.
C.Fn-00				Focusing screen
0:	For New Laser-matte screens.
1:	For Laser-matte screens. Since the EOS-1D Mark II's standard focusing screen is the Ec-CIII, C.Fn-00-1 is already set upon factory shipment.