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Autofocus Styles
Now we have defined the method by
which the autofocus will operate we can
consider the three styles which are
available to us; the AFS, AFF and AFC
Autofocus styles
AFS (autofocus single) This style is most suited to static shots or subjects
which do not change focus distance during composition. This could
include any moving object which is parallel to the focal plane.
This method activates as you half depress the shutter release button.
At
this point the camera will focus, using your preferred mode, confirm the
focus by the audible beep and green indicator in the display area and will
lock and stop focusing.
It will remain in this mode as long as you keep the shutter button in this
position. To capture the image, fully depress the shutter release button.
This single shot mode is, however, prone to focus errors when there is
any subject motion which is not parallel to the camera focal plane as the
subject may have moved closer, or farther away, during the time it
takes
to depress the button completely and the electronics/mechanics
recording the shot.
This is generally termed “shutter lag”. It's quite short in the case of the
FZ200 but could still take the edge off the sharpness of your image.
Subject course
change in subject to camera distance
during shutter lag time
Focal plane
As this software algorithm does not take into consideration any subject
motion if you intend to photograph moving objects it is better to consider
the two other styles:
AFF (autofocus flexible) and AFC (autofocus continuous).
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