| Every
DV video camera is equipped with auto focus. However,
auto focus is not "auto-perfect." Many times
auto focus will constantly readjust itself depending
on what is going on in the shot. It could be a lighting
change, or a moving object that could change the focus.
To assure your focus is steady, it is best to turn
off the auto focus whenever possible. After turning
off auto-focus you need to manually focus. Use a
technique called "Rack Focusing."
To Rack Focus, zoom in on the object as close as
possible, turn off auto focus, then manually set
the focus. When the camera is zoomed in, the depth
of field is reduced, allowing you to have a better
idea of what is in focus. As you zoom out, you will
find that your object stays in focus as long as neither
the object you are shooting nor the camera move.
If you know that the distance between the camera
and the objects you are shooting will be moving,
it is best to zoom out as far as the shot will allow.
This ensures that you will have the largest depth
of field possible, allowing your objects to appear
less blurry. |