Sony Ericsson DVW-707P - Manual (Page 18)

Contrast Range
The new DVW-790WSP, DVW-709WSP and DVW-707P can handle a very impressive contrast range.
A number of useful features are readily available to help production crews meet specific shooting
requirements.
Gamma
The gamma curve, in general, determines the way in which
mid-tones are handled and therefore is of vital importance in
achieving the overall ‘look’ of a shot. Changing master
gamma is achieved either from a remote control unit or via
the setup menu. These new camcorders are provided with
a more natural and smoother gamma curve with 48 gamma
points (the previous generation of DVW-700P and
DVW-700WSP models had 32 gamma points) and therefore
a more natural overall tonal reproduction.
In addition to master gamma and gamma balance, several
independent gamma curves are provided to increase
operational flexibility. They can all be accessed via the
setup menu. Curve A is the standard setting. Curve B gives
a higher initial gamma gain, stretching black areas of the
picture. Gamma C further increases the initial gamma.
Gamma F is the so-called ‘Film Gamma’ and represents the
average transfer characteristics of a few of the most popular
film stocks. It has a shallow slope in the shadows area,
slopes uniformly in the mid-tone region and flattens off in
the high-lights, enhancing the overall dynamic range.
All the above gamma curves are built-in and cannot be
altered. However, the Gamma S position is reserved for
a gamma curve that can be read from the Digital Gamma
Setup Cards (BSC-1 Pack) or from a PC running Sony
BZP-100 setup software. This software allows this gamma
curve to be modified.
Black Gamma
The Black Gamma function helps to control shadows area with precision. It can help to bring out details from the dark parts of the picture
without affecting mid-tones and keeping absolute black level unchanged. The range of creative possibilities offered by the flexibility of setting
up Gamma and Black Gamma is quite inspiring and, when mastered, offers users a great advantage in achieving a desired ‘look’.
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Gamma A
Gamma F
Normal