Using Manual Focus - Hitachi VM-E110A Instruction Manual

Advanced Techniques
The auto focus will not work under the following conditions and you must focus
manually:
Note: With the T zoom control you can use the auto focus with subjects that are 3.3 feet
away from the lens and further away to infinity. With the W zoom control you can use the
auto focus with subjects 0.4 inches away from the lens and further away to infinity.

Using Manual Focus

Objects outside the center of the viewfinder
Objects at different distances in the center of the viewfinder
Brightly lit objects such as a neon light, objects lit by spotlight, etc.
Objects behind water dappled or dusty glass
Objects with little difference in light reflection such as a white wall
Rapidly moving objects
Dark objects
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