Canon EOS 7D Mark II Advanced Owners Manual - Page 305

Using AF to Focus (AF Method) Notes for AF AF Operation Even when focus is achieved, pressing the shutter button halfway will focus again. The image brightness may change during and after the AF operation. If the light source changes while the Live View image is displayed, the screen may flicker and focusing may be difficult. If this happens, exit Live View shooting and execute AF under the actual light source. If [u+Tracking] is set, magnified view is not possible. When [FlexiZone - Multi] is set and you press the button, the center of the selected zone (or image center with automatic selection) will be magnified. When [FlexiZone - Single] is set and you press the button, the area covered by the AF point will be magnified. If you press the shutter button halfway, focusing will be performed while displaying the magnified view. If focusing is difficult in magnified view, return to the normal display and use AF. Note that the AF speed may differ between the normal and magnified views. If you magnify the view after focusing with [FlexiZone - Multi] or [FlexiZone - Single] in the normal view, precise focus may not be achieved. When in magnified view, contrast-detection AF will be applied regardless of the lens used. The AF speed will therefore become slow. When in magnified view, Continuous AF (p.294) will not be executed. In magnified view, the image will be displayed without distortion correction applied. 305