Custom Functions

	Custom functions on the EOS-1D Mark IV are split into four categories, each has its own menu and is identified using a roman numeral (I, II, III and IV).

C.Fn I: Exposure

Option	Values	Notes
I-1: Exposure level increments	0: 1/3-stop set 1/3-stop comp. 1: 1-stop set 1/3-stop comp. 1: 1/2-stop set 1/2-stop comp.
I-2: ISO speed setting increments	0: 1/3 stop 1: 1 stop
I-3: Set ISO Speed Range	Disable Enable Register Highest ISO Speed (100 - H3) Lowest ISO Speed (L - H2) Apply
I-4: Bracketing auto cancel	0: On 1: Off
I-5: Exposure Bracketing sequence	0: 0, –, + 1: –, 0, + 2:+, 0, –
I-6 Number of Bracketed shots	0: 3 shots 1: 2 shots 2: 5 shots 3: 7 shots
I-7 Spot meter. link to AF point	0: Disable (use center AF point) 1: Enable (use active AF point)
I-8: Exposure Safety shift	0: Disable 1: Enable (Tv/Av) 2: Enable (ISO speed)
I-9: Select usable shooting modes	Disable Enable Register M On/Off P On/Off Tv On/Off Av On/Off Bulb On/Off Apply
I-10: Select usable metering modes	Disable Enable Register Evaluative Partial Spot Center-weighted average Apply
I-11: Exposure mode in manual expo.	0: Specified metering mode 1: Evaluative Metering 2: Partial Metering 3: Spot Metering 4: Center-weighted average
I-12: Set shutter speed range	Disable Enable Register Highest Speed: 1/250 to 1/8000 Lowest Speed: 30 secs to 1/60th Apply
I-13: Set aperture value range	Disable Enable Register Min aperture value: 1.4 - 91 Max. aperture: 1.0-64 Apply
I-14: Apply shooting/metering mode	Disable Enable Register With AE Lock button (AF On) With AE Lock button (AF Off)
I-15: Flash sync. speed in Av mode	0: Auto 1: 1/300 - 1/60 sec. auto 1: 1/300 sec. (fixed)
I-16: AE Micro adjustment	0: Disable 1: Enable	Adjusts exposure meter by up to ±1EV in 1/8EV steps
I-17: FE Micro adjustment	0: Disable 1: Enable	Adjusts flash metering by up to ±1EV in 1/8EV steps

C.Fn II: Image/Flash exp/Disp

Option	Values	Notes
II-1: Image Long exp. noise reduction	0: Off 1: Auto 2: On
II-2: High ISO speed noise reduction	0: Standard 1: Low 0: Strong 1: Disable
II-3: Image Highlight tone priority	0: Disable 1: Enable
II-4: Auto Lighting Optimizer	0: Standard 1: Low 0: Strong 1: Disable
II-5: E-TTL II flash metering	0: Evaluative flash metering 1: Average flash metering
II-6: Shutter curtain sync.	0: 1st-curtain synchronization 1: 2nd-curtain synchronization
II-7: Flash firing	0: Enable 1: Disable
II-8: Viewfinder info. during exp	0: Disable 1: Enable
II-9: LCD panel illumi. during bulb	0: Off 1: On during bulb
II-10: Info button when shooting	0: Displays shooting functions 1: Displays camera settings

C.Fn III: Auto focus / Drive

Option	Values	Notes
III-1: USM lens electronic MF	0: Enable after One-shot AF 1: Disable after One-shot AF 2: Disable in AF mode
III-2: Servo tracking sensitivity	Slow - Fast (5 steps)	Defines how stubbornly the AF system sticks to its original subject.
III-3: AI Servo 1st/2nd img. priority	0: AF priority/Tracking priority 1: AF priority/Drive speed priority 2: Release/Drive speed priority 2: Release/Tracking priority	Defines whether the camera should wait until it's found focus before shooting the first and subsequent shots.
III-4: AI Servo AF tracking method	0: Main focus point priority 1: Continuous AF track priority
III-5: Lens drive when AF impossible	0: Focus search on 1: Focus search off
III-6: Lens AF stop button function	0: AF stop 1: AF start 2: AE lock 3: AF point: M->Auto / Auto->Ctr 4: One Shot <-> AI Servo 5: IS start 6: Switch to registered AF point 7: Spot AF
III-7: AF Microadjustment	0: Disable 1: Adjust all by same amount 2: Adjust by lens
III-8: AF expansion w/selected pt	0: Disable 1: Left/right AF point 2: Surrounding AF points 3: All 45 points area
III-9: Multi-controller while meter.	0: Off 1: AF point selection
III-10: Selectable AF point	0: 45 points 1: 19 points 2: 11 points 3: Inner 9 points 4: Outer 9 points
III-11: Switch to registered AF point	0: Disable 1: Switch with multicontroller 2: Only while <*> is pressed
III-12: AF point auto selection	0: rear dial direct: disable/front: enable 1: rear dial direct: disable/front: disable 2: rear dial direct: enable/front: enable
III-13: AF point display during focus	0: On 1: Off 2: On (when focus achieved)
III-14: AF point brightness	0: Normal 1: Brighter
III-15: AF-assist beam firing	0: Enable 1: Disable 2: IR AF assist beam only
III-16: Orientation linked AF point	0: Same for both vert/horiz 1: Select different AF points
III-17: Mirror lockup	0: Disable 1: Enable 2: Enable: Down with SET
III-18: Continuous shooting speed	Disable Enable Register High speed (2-10 shots) Low speed (1-9 shots) Apply
III-19: Limit continuous shot count	Disable Enable Register High speed (2-10 shots) Low speed (1-9 shots) Apply

C.Fn IV: Operation / Others

Option	Values	Notes
IV-1: Shutter button / AF-ON button	0: Metering + AF start 1: Metering + AF start / AF stop 2: Metering start / Meter+AF start 3: AE lock / Metering + AF start 4: Metering + AF start / disable
IV-2: AF-ON / AE lock button switch	0: Disable 1: Enable
IV-3: Quick control dial in meter.	0: Exposure comp./Aperture 1: AF point selection 2: ISO speed 3: AF point selection/AE-comp button swap 4: ISO speed/AE-Comp button swap
IV-4: SET button when shooting (only when Live View is disabled)	0: Normal (disabled) 1: White Balance 2: Image Size 3: ISO speed 4: Change Picture Style 5: Record func. + media/folder 6: Menu display 7: Image replay
IV-5: Tv/Av setting for manual exp.	0: Front dial Tv, Rear dial Av 1: Front dial Av, Rear dial Tv
IV-6: Dial direction during Tv/Av	0: Normal 1: Reverse direction
IV-7: Av setting without lens	0: Disable 1: Enable
IV-8: WB + media size settings	0: Real LCD panel 1: LCD monitor
IV-9: lock/audio button function	0: Protect (hold: Record memo). 1: Record memo (Protect: Disabled) 2: Play memo (hold: Record memo)
IV-10: Button function when rear dial off	0: Normal (enable) 1: Disable front dial, rear dial and multi controller.
IV-11: Start movie shooting	0: Default (from LV) 1: Quick start (<FEL>btn.)
IV-12: Focusing Screen	0: L Ec-CIV 1: L Ec-A, B, C, CII, CIII, D, H, I L 2: P Ec-S 3: N Ec-N, R
IV-13: Timer length for timer	Disable Enable Register 6 sec timer: 0 secs to 60 mins 16 sec timer: 0 secs to 60 mins Timer after release: 0 secs to 60 mins Apply
IV-14: Shortened release lag time	0: Disable 1: Enable
IV-15: Add aspect ratio information	0: Off 1: Aspect Ratio 6:6 2: Aspect Ratio 3:4 3: Aspect Ratio 4:5 4: Aspect Ratio 6:7 5: Aspect Ratio 10:12 6: Aspect Ratio 5:7
IV-15: Add image verification data	0: Disable 1: Enable

My Menu

The 'My Menu' feature (now found on all current EOS models) allows you to produce a custom menu made up of any of the camera's menu options (including custom functions). This means that previously buried but useful options such as mirror lockup can now be brought to a top level menu.