Using full-time manual focusing EF 28-300mm f/3.5-5.6L IS USM After autofocusing in ONE SHOT AF mode, focus manually by pressing the shutter button halfway and turning the focusing ring.
The AF speed (10 steps) and AF response (7 steps) can be changed. Also, AF speed can be selected to be applied constantly or only when recording. The lenses below will allow the AF speed to be altered from within the camera's menu.
The lens must be switched to manual focus (M) on the AF / M selector switch. You can then look through the viewfinder and adjust the focus by turning the manual focus ring and adjusting it till the image is sharp and the green focus indicator ball, in the lower right corner of the viewfinder lights up.
To shoot in autofocus mode, set the focus mode switch to AF To us only manual focusing, set the focus mode switch to MF and focus by turning the focusing ring
Setting the Focus Mode To set the AF mode, set the focus mode switch to AF . To disable the autofocus mode and focus manually, set the focus mode switch to MF and turn the focusing ring.
Setting the Focus Mode EF100-400mm F4.5-5.6L IS USM To shoot in autofocus mode, set the focus mode switch to AF . To use only manual focusing, set the focus mode switch to MF by turning the focusing ring.
EF55-200mm f/4.5-5.6 USM Its newly designed five lens group construction with three movable lens groups improves telephoto picture quality and results in a high-magnification zoom ratio that includes the standard range. The micro USM (Ultrasonic Motor) drive AF is fast and silent. A wide zoom ring ensures smooth zoom operation for excellent operability.