Canon EOS-1Ds Review: 6. Operation & Controls: Digital Photography Review

Top of Camera Controls: Left Side

The top of the camera is identical to the EOS-1D, this will be familiar to anyone who has used an EOS-1V, control layout is virtually identical, there are only a few subtle styling differences.

On the left are three buttons which are used in combination with the main dial (just behind the shutter release). These buttons pressed either individually or combined with one other allow you to change the settings of up to six different camera settings. In the icons below the half dial is the main dial (top front of hand grip) and the full dial is the quick command dial (rear).

Button / combination
	Select exposure mode: *1 • P (Program AE - shiftable) • Av (Aperture Priority) • DEP (Depth of field AE) • M (Manual) • Tv (Shutter Priority) • Bulb (detailed below)	No function
	Select AF mode • AI Servo • One Shot (detailed below)	No function
	Select metering mode *2 • Evaluative metering (21 zone) • Partial metering (8.5% of center) • Spot metering (2.4% of center) • Center-weighted average metering (detailed below)	Select flash exposure compensation: • +/-3 EV in 0.3 EV steps
AF + Mode	Select exposure bracketing: *3 • 0.3 - 3.0 EV steps (3 frames)
AF + Meter mode	Select ISO sensitivity: *4 • L (ISO 50 equiv.) • ISO 100 • ISO 125 • ISO 160 • ISO 200 • ISO 250 • ISO 320 • ISO 400 • ISO 500 • ISO 640 • ISO 800 • ISO 1000 • ISO 1250	Select ISO bracketing: • 0.3 - 3.0 EV steps (3 frames)
Mode + Meter mode	Select drive mode: *5 • Single • Continuous; 3 fps • 10 sec self timer • 2 sec self timer (detailed below)

*1	• P.Fn 1 allows you to disable any of the exposure modes.
*2	• C.Fn 13 allows you to lock metering to the currently selected AF point for Spot metering. • P.Fn 2 allows you to disable any of the metering modes.
*3	• C.Fn 9 allows you to change the bracketing sequence / auto cancellation rule • P.Fn 7 enables continuous bracketing • P.Fn 8 can be used to set the number of bracket shots (2, 3, 5, 7) • P.Fn 9 can be used to reverse the sequence of C.Fn 9-2,3 to +,0,-
*4	• C.Fn 3 must be enabled to use the 'expanded' ISO 50 (indicated as L)
*5	• P.Fn 19 allows you to re-program continuous modes to 3,2,1 fps respectively.

Exposure / Focus / Metering / Drive modes

Exposure modes

Mode	Description
P	Program AE (Shiftable) 1 The Program AE on the EOS-1Ds is flexible, that means that with a metered exposure displayed you can select one of a variety of equal exposures by turning the main dial (top of camera) left or right. Example: • 1/30 F4.5 (roll left a click) • 1/60 F3.2 (roll left a click) • 1/125 F2.2 (metered)* • 1/250 F1.6 (roll right a click) • 1/320 F1.4 (roll right a click) By default the EOS-1Ds only remembers the selected exposure until the exposure meter display timeout (6 seconds) - this behaviour can be changed via a personal function.
Av	Aperture Priority Auto *2 In this mode you select the aperture and the camera will calculate the correct shutter speed for the exposure (depending on metered value; metering mode, ISO). Aperture is displayed on the top LCD, roll the main dial (top) to select different apertures. A half-press of the shutter release causes the cameras exposure system to calculate the shutter speed, if it's outside of the cameras exposure range the nearest shutter speed will blink. • F1.0 - F91.0 (depending on lens) in 1/3, 1/2 or 1 EV steps
DEP	Depth-of-field AE This unique Canon EOS feature allows you to select two focus points in a scene and the camera will then select the correct aperture and focus distance to ensure both subjects are in focus (within the focus field) in the final shot. On the EOS-1D this is carried out by focusing (half-press of the shutter release) on the first subject, then focusing on the second subject (again, another half-press) and then recompose the scene and fully depress the shutter release. The camera indicates which subject you're focusing on with a DEP-1 / DEP-2 display on the top LCD and viewfinder status bar.
M	Manual Exposure *3 In this mode you select the aperture and the shutter speed from any available combination. Main dial (top) selects shutter speed, quick command dial (rear) selects aperture. A half-press of the shutter release will activate the cameras meter and the relative exposure difference (+/- 3 EV) will be indicated on the viewfinder meter (right of the viewfinder screen). A difference of exposure of more than 3 EV is indicated by either an up or down pointing arrow.
Tv	Shutter Priority Auto *4 In this mode you select the shutter speed and the camera will calculate the correct aperture for the exposure (depending on metered value; metering mode, ISO). Shutter speed is displayed on the top LCD, roll the main dial (top) to select different shutter speeds. A half-press of the shutter release causes the cameras exposure system to calculate the aperture, if it's outside of the cameras exposure range the nearest aperture will blink. • 30 seconds - 1/8,000 sec in 1/3, 1/2 or 1 EV steps
Bulb	Bulb Exposure The EOS-1Ds has a dedicated Bulb exposure mode. In this mode you can select the aperture by rolling the main dial (top) then press and hold the shutter release for the length of exposure you require (normally in conjunction with a remote release). During the exposure the top display gives a readout of the exposure length in hours, minutes and seconds.

*1	• P.Fn 10 can be used to retain the program shift for multiple shots
*2	• Exposure steps can be set to 1/3, 1/2 or 1 EV via C.Fn 6. • P.Fn 5 allows you to limit the range of available apertures (for all exposure modes).
*3	• P.Fn 3 can be used to select the type of metering mode used in manual exposure mode. • C.Fn 5 can be used to reverse the action of the main / sub dial for selection of aperture and shutter speed.
*4	• Exposure steps can be set to 1/3, 1/2 or 1 EV via C.Fn 6. • P.Fn 4 allows you to limit the range of available shutter speeds (for all exposure modes).
	• P.Fn 1 allows you to disable any of the exposure modes.
	• C.Fn 16 allows you to enable 'safety shift' for Av or Tv modes, when enabled the camera will automatically override the selected aperture or shutter speed to avoid overexposure.

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