Specifications

Canon 70D Experience
143
 Press and hold the Shutter Button halfway down and see that point blink (if
Custom Function C.Fn II-12: VF Display Illumination is set for Enable). The
Focus Confirmation Light should light up in your Viewfinder, and the camera will
beep if you have that enabled. You have locked the focus.
 Keeping the Shutter Button pressed halfway to keep the focus distance locked,
recompose if necessary, and take the shot by fully pressing the Shutter Button.
Figure 156 - Cambridge Carnival - Cambridge, Mass. - Simulated view of 70D
Viewfinder, using a manually selected AF Point to focus on the subject’s eye (manually
selected far-right Focus Point shown here in red over the subject’s eye). Shutter speed
1/1000, Aperture f/4.0, ISO 400.
If the Focus Confirmation Light does not light up and the camera does not take the
photo, the camera may not be finding enough contrast to focus on, you may be too
close to your subject for the lens to focus, or the lighting may be too dim for the AF
system to work properly. Try using the center AF Point, which performs slightly better in
low light, and is a more sensitive cross-type point with certain lenses (having an f/2.8 or
wider maximum aperture). Or you may be in AI Servo AF mode, which does not lock
focus in this manner because it is tracking a moving subject. Note that the area that the
camera evaluates for focus is slightly larger than the actual active AF Point squares you
see in the Viewfinder. In rare situations when autofocusing fails, you can also resort to
manual focusing by switching your lens to MF and using the lens focusing ring. Or you
can autofocus on an object at the same distance from the camera as the subject, and