Live View Shooting - Canon EOS 40D Service Manual

1.9 Live View shooting
In addition to the same Live View shooting feature
found in EOS-1D Mark III, the camera enables "AF during
Live View shooting" (C.Fn III-6) and "Silent shooting." This
section explains only the differences with the EOS-1D
Mark III's Live View shooting feature.
Live View shooting is only possible with the Creative
Zone modes.
１）AF during Live View shooting
With C.Fn III-6 (Fig. 022), the set AF mode and AF
point (automatic selection possible) will be applied
during AF while you hold down the AF-ON button. Note
that during this time, there will be no Live View image
displayed since the reflex mirror will be down. (Fig. 023)
Since no AF points are displayed on the Live View screen,
positioning the magnified display's focusing frame at the
center and selecting the center AF point for autofocusing
is recommended.
During AF operation, shutter release is not possible.
You must first let go of the AF-ON button and wait until
the Live View image is displayed, then shoot.
２）Silent shooting
⑴Mode 1 and Mode 2
With the CMOS sensor's electronic 1st-curtain
shutter, shooting is possible while the Live View image
is displayed and the mechanical 1st curtain is open.
The mechanical 1st curtain need not be closed in order
to shoot. This eliminates the mechanical 1st curtain's
shutter sound at SW-2 ON which occurs with the EOS-
1D Mark III during Live View shooting. Silent shooting
is thereby possible.
Mode 1 enables continuous shooting (approx. 6 fps
for high-speed continuous). Continuous shooting is not
possible with Mode 2. However, since the shutter is not cocked up until SW-2 OFF, the
shutter sound during the exposure can be limited to only the quieter mechanical 2nd-
curtain shutter sound.
⑵Disable
As with the EOS-1D Mark III's Live View shooting, the exposure is controlled with the
mechanical shutter's 1st and 2nd curtains. Set to "Disable" when using a TS-E lens shifted
up or down or when using an Extension Tube. If you set Mode 1 or Mode 2 when using
a TS-E lens, the slit created between the electronic 1st-curtain shutter and mechanical
2nd-curtain shutter (hardly no slit between the mechanical 1st-curtain and 2nd-curtain
shutters) will be in the same orientation as the optical axis, resulting in underexposure
or overexposure. With an Extension Tube, the exposure will be uneven at the top and
bottom of the image. (Fig. 025)
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11
Technical Information
Fig. 021 Live View shooting menu
Fig. 022 C.Fn-III-6
Fig. 023 AF during Live View shooting
Fig. 024 Silent shooting