Appendix; Useful Information; Appendix Useful Information - Sharp VIEWCAM VL-SD20S Operation Manual

Appendix

Appendix

Useful Information

Hints for Better Shooting
• Position the subject in the centre of the
screen. When you are using auto focus,
whatever is in the centre of the screen is kept
in focus.
Position the subject in Focus manually when
the centre. you need to position
the subject off centre
• 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 iris to improve the picture (see pages 29
and 54).
Light from behind Backlighting
• 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.
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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)
100,000
(see page 50).
10,000
1,000
100
10
Note: The figures in the chart are approximations.
Tips on Good Lighting
n most outdoor, daytime scenes, natural
I
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.
G. K . A s s o c i a t e s , To k y o
Situation (Lux)
Blue sky
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)
Cloudy day, one hour after sunrise (2,000)
Clear day, one hour before sunset (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 1 m (250)
Shop stairway (100)
During intermission at movie theatre (15–35)
Cigarette lighter at 30 cm (15–20)
Candles on birthday cake at 20 cm (10–15)
Candlelight