Canon EOS 10D EOS 10D INSTRUCTIONS - Page 65
One-Shot AF for Still Subjects, Focusing an Off-Center Subject - shutter not working
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One-Shot AF for Still Subjects AF point Selecting AF Mode Focusing Focus confirmation light Pressing the shutter button halfway 4 activates AF operation and achieves focus once. s The AF point which achieved focus will flash briefly and the focus confirmation light in the viewfinder will light at the same time. • With evaluative metering, the exposure setting (shutter speed and aperture) will be set when focus is achieved. The exposure setting and focus will be locked as long as the shutter button is pressed halfway. You can then recompose the shot while retaining the exposure setting and point of focus. With C.Fn-10-1, you can disable the AF point from flashing in red (superimposed display) when focus is achieved. (→p.149) Focusing an Off-Center Subject To focus an off-center subject not covered by any of the seven AF points, follow the procedure below. This technique is called focus lock. Focus lock works when the AF mode is set to One Shot AF. 1 Aim the AF point over the subject and press the shutter button halfway to focus. 2 Keep pressing the shutter button halfway and recompose the image as desired. 3 Shoot. If focus cannot be achieved, the focus confirmation light in the viewfinder will blink. If this occurs, an image cannot be captured even if the shutter button is pressed fully. Reframe the shot and focus again. Also see "When Autofocus Fails (Manual Focusing)" on page 71. 65