GRASS VALLEY Focus 70 Live, User Manual

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64 Focus 70 Live Highly Affordable HD System Camera User’s Guide (v1.1)
Chapter 5 - Video setup
automatic white balance switch at the front. The FL positions are recommended for shooting
with fluorescent light.
A continuous automatic white balance position (AWC) is also available. This function
continuously measures the white balance and adjusts it accordingly. It can be used when a
constant color balance is required under changing lighting temperatures (sunsets, indoors/
outdoors use).
5.8.2 Color Tint
In some cases, color temperature alone is not enough to fully compensate for color cast so an
additional tint adjustment is needed. Similar to how color temperature specifies the relative
warmth or coolness of an image, tint generally specifies the balance between magenta and
green color casts. When combined, color temperature and tint can therefore control and
effectively remove virtually any color cast.
5.8.3 Color Filter
In the auto-white positions (FL50, FL60, AW1 and AW2) a Color Filter can be set up in the
PRODUCTION SETUP > COLOR > COLOR TEMP > COLOR FILTER
menu. This varies the color
balance to obtain warmer or colder color effects.
☞
Note
☞
Note
The automatic white balance process is performed independent of the Color Filter. The Color
Filter is not disabled when AWC is on.
5.8.4 Selecting color temperature
The up/down color temperature switch on the left side of the camera allows a choice
between three preset color temperatures:
• 3200 K - for indoor lighting conditions
• 5600 K - for outdoors, clouded conditions
• 7500 K - for outdoors, clear blue skies
and four memory positions:
• FL50 - memory position for 50 Hz fluorescent light (matrix is set to CoolFL and exposure
to 50 Hz )
• FL60 - memory position for 60 Hz fluorescent light (matrix is set to CoolFL and exposure
to 60 Hz )
• AW1 - Auto White memory position 1
• AW2 - Auto White memory position 2
and one automatic continuous white position:
• AWC - Auto White Continuous measurement (from 2500 K to 20000 K)