References; Useful Information; References Useful Information - Sharp VIEWCAM VL-A110U Operation Manual

References

Useful Information

Hints for Better Shooting
• Position the subject in the center of the
screen. When you are using auto focus,
whatever is in the center of the screen is kept
in focus.
Position the subject in
the center.
• Avoid backlit subjects. For the best picture,
shoot with the light source behind you.
When the background is brighter than the
subject, the subject often becomes too dark.
If you have to record with this lighting, use the
Gamma Brightness Compensation or correct
the exposure level to improve the picture (see
pages 30 and 46).
Light from behind
• Before zooming, think about how to best
frame the shot. Frequent zooming produces
unattractive pictures. It also increases the
battery power consumption.
• When image shakes are noticeable during
zoomed-in telephoto shooting, use a tripod,
or push the Power Zoom control to the W side
to zoom out.
• Horizontal panning (lateral movement) and
tilting (vertical movement) should be done
slowly to emphasize the wide expanse of a
scene or the height of a building, and to
make scenes easy to watch during playback.
• Use a wide-angle setting for fast-moving
subjects.
Note:
• It may take longer to focus when zooming and
panning are used frequently.
Focus manually when
you need to position
the subject off center
(see page 44).
Backlighting
Lighting
For clear, good-quality recording, 500 to
100,000 lux is needed. Recording is possible
with less light, but the picture quality may
suffer. Adequate lighting is also essential for
correct white balance.
Brightness
(Lux)
Blue sky
100,000
Clear day at noon (100,000)
Clear day at 10 am (65,000)
Clear day at 3 pm (35,000)
Cloudy day at noon (32,000)
Cloudy day at 10 am (25,000)
10,000
Cloudy day, one hour after sunrise (2,000)
Clear day, one hour before sunset (1,000)
1,000 Fluorescent light near window (1,000)
Factory floor (700–800)
Sales counter in department store (500–700)
Bowling alley (500)
Library (400–500)
Office with fluorescent lighting (400–500)
Fluorescent desk lamp (400)
Flashlight at 3 ft (1 m) (250)
100 Shop stairway (100)
During intermission at movie theater (15–35)
Cigarette lighter at 1 ft (30 cm) (15–20)
Candles on birthday cake at 8 inches (20 cm) (10–15)
10
Candlelight
Note: The figures in the chart are approximations.
Tips on Good Lighting
I n most outdoor, daytime scenes, natural
lighting is adequate for home videos. Indoors,
however, artificial lighting is usually required.
Video lights with halogen lamps provide the
most natural artificial light over a long operating
life.
Situation (Lux)
50