Table CFn Exposure

Option Number Option Name Description C.Fn I-1 Exposure-level increments

0 1/3 stop By default, the 40D uses 1/3 stop as the exposure-level increment for changes in shutter speed, aperture, exposure compensation, and auto-exposure bracketing.

1 1/2 stop Sets 1/2 stop as the exposure-level increment for shutter speed, aperture, exposure compensation, and auto-exposure bracketing changes.

C.Fn I-2 ISO speed setting increments

0

1/3-stop

By default, the 40D uses 1/3 stop as the ISO adjustment increment. With this option set, the ISO speeds are: Auto, 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, and H (3200) with C.Fn I-3 set to On.

1

1-stop

Sets 1 f-stop as the ISO adjustment-level increment. With this option set, the ISO speeds are the traditional settings of: Auto, 100, 200, 400, 800, 1600, and H (3200) with C.Fn I-3 set to On.

C.Fn I-3 ISO expansion

0

Off

At this default setting, you cannot choose ISO 3200 denoted as "H" in the viewfinder and LCD panel.

1

On

Allows you to select and use the expanded ISO setting of 3200 (H). With this option, you can select H as an ISO option in the same way that you select other ISO settings.

C.Fn I-4 Bracketing auto cancel

0

On

Both AEB and WB-BKT are cancelled when you turn the camera power switch to Off, have the flash ready to fire, or if you clear camera settings.

1

Off

Choosing this option retains AEB and WB-BKT settings even after you turn off the camera. On a flash-ready, the bracketing is cancelled, but the camera remembers the AEB amount.

Option Number Option Name Description C.Fn I-5 Bracketing sequence

O

O, -, +

This is the default setting that captures bracketed images beginning with the standard exposure or white balance, then the decreased exposure or white balance, and then the increased exposure or white balance.

l

-, O, +

This option changes the bracketed images sequence so that it begins with the decreased exposure or white balance, then the standard exposure or white balance, and then the increased exposure or white balance.

C.Fn I-6 Safety shift

O

Disable

Maintains the set exposure you've set regardless of subject brightness changes.

l

Enable (Tv/Av)

In Shutter-priority AE (Tv) and Aperture-priority AE (Av) modes, the shutter speed or aperture automatically shifts if the subject brightness suddenly changes to provide an acceptable exposure.

C.Fn I-7 Flash sync speed in Av mode

O

Auto

Automatically syncs Speedlites at speeds 1/250 second or slower.

l

1/250 sec. (fixed)

Automatically sets the flash sync speed to 1/250 second in Aperture-priority AE (Av) mode. If you use this sync speed against the night sky, the background goes dark.

Table 4.6

AEB, WB-BKT Bracketing Sequence

Table 4.6

AEB, WB-BKT Bracketing Sequence

AEB WB Bracketing

Blue/Amber bias Magenta/Green bias

0 : Standard exposure 0 : Standard white balance 0 : Standard white balance

- : Decreased exposure - : More blue - : More magenta

+ : Increased exposure + : More amber

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Responses

  • luca
    How to set aperture incrament 40d .3?
    7 years ago

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