Using The Inst. Zoom (Instant Zoom) Button; Using Auto Focus - Hitachi VM-H81A Instruction Manual

Advanced Techniques
Press and hold the power zoom T control until you find the picture you
want. You control the zoom with the power zoom T and W controls. When
ZOOM is not displayed in the viewfinder, normal zoom functions resume.

Using the INST. ZOOM (Instant Zoom) Button

The instant zoom feature activates the digital zoom to magnify the subject
1.5 times regardless of zooming engaged by the power zoom T and W
controls.
Press the INST. ZOOM button. I. ZOOM appears at the left of the
viewfinder and the picture is magnified 1.5 times momentarily.
Note: To return to the original zoom position, press the INST. ZOOM button
so that I. ZOOM disappears from the viewfinder.
Note: This instant zoom has certain limitations and may degradate at extreme
magnification and amplify camcorder's movement.

Using Auto Focus

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The camcorder focuses the subject in the center of the viewfinder automatically
unless the manual focus is engaged. If FOCUS appears in the viewfinder,
manual focus is engaged. Press the FOCUS control (AUTO/MAN) buttons
simultaneously to return to auto focus.
The auto focus will not work under the following conditions and you must
focus manually:
spotlight, etc.
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
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