Canon EOS 1D Mark III Additional Functions - Page 4

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Canon EOS 1D Mark III Additional Functions

C.Fn I-14: Instant switch of Exposure and Metering settings with AE Lock button

I-14 — Choices are: Disable, Enable, Register

With C.Fn I-14 Enabled, you can instantly switch from one exposure mode to another memorized mode, whenever you press the

camera's AE Lock button (it reverts back to the original settings when you release the AEL button). This feature can be useful for

many situations; one example: if you want to take one or two quick Program shots while your camera is set in Manual. Set the

camera to the mode, metering pattern, and any Exposure Compensation you want, and then choose "Register" to memorize it.

When "Enable" is set, you instantly revert to these memorized settings by pressing the AE Lock button. Also: you have the choice

of the AE Lock button providing "back-button AF" (choose the "AF on" option when registering your settings) or leaving AF at the

shutter button (choose "AF off" option).

C.Fn I-15: Shutter speeds with EOS speedlites in Av mode

I-15-0 — Automatically selects shutter speed to the ambient lighting condition

I-15-1 — Sets the camera to the

When shooting flash photos in Aperture Priority mode, the camera by default selects a shutter speed to match the ambient lighting

condition for a balanced flash photograph. Indoors or in low light, this often means very slow shutter speeds — possibly as slow as 30

full seconds, in a totally darkened room. Photographers who prefer lock-in the maximum flash sync speed (

should enable C.Fn I-15-1. Note that balanced-fill flash may be impossible in low-light conditions with this function engaged.

C.Fn II:

Image / Flash Exposure / Display

C.Fn II-1: Long Exposure Noise Reduction

II-1-0 — Off

II-1-1 — Auto

II-1-2 — On

When enabled, this function dramatically reduces the fixed pattern noise that can develop when shooting exposures longer than

one second. The longer the exposure is, the more effective the noise reduction. Caution: this mode doubles the exposure time.

For example a 30 second exposure will take approximately one minute, as the camera takes an added 30 seconds to perform the

noise-reducing processing. During this time, the camera's "card-busy" light will remain illuminated, and you won't be able to

take another long-exposure photo. In the Auto setting (C.Fn II-1-1), after the image is taken, the camera analyzes the level of noise

and "decides" for itself whether or not to apply Long Exposure Noise Reduction.

C.Fn II-2: High ISO Noise Reduction

II-2-0 — Off

II-2-1 — On

Despite Canon's unparalleled high ISO performance, this function reduces some of the chromatic noise that can occur when

shooting at high ISO speeds. At low ISO speeds, this function will further reduce shadow area noise — especially if the image

is lightened afterward in the computer — but does dramatically reduce the camera's "burst rate" in both situations.

The 10 fps maximum shooting speed is unaffected.

300 th

⁄

sec flash sync speed

EOS-1D Mark III Exposure Custom Functions

300 th

⁄

sec) when using Av