Sony F23 3-11Selecting the Gamma, 3-11-1Using the Standard Gamma, 3-11-2Using the Hyper Gamma, 3-11-3Using the User Gamma, <GAMMA> page

3-11 Selecting the Gamma

You can use User gamma you create in addition to the built-in Standard gamma and Hyper gamma.

Use the <GAMMA> page of the USER (PAINT) menu for gamma operations.<GAMMA> page

<GAMMA>				U19
		[R]	[G]	[B]	[M]
LEVEL	:	0	0	0	0
COARSE	:	0.45
TABLE	:BSTANDARD
	: 5 (ITU-R709)
GAMMA	: ON
TEST	:		OFF

3-11-1 Using the Standard Gamma

The standard gamma is intended to be used for on-the-spot creation of video materials, eliminating the need for post- production processing.

When STANDARD is selected on the first line of TABLE of the <GAMMA> page, you can select from among the following standard gamma curves:

Gamma table No.	Gamma curve
1	equivalent to SD ENG camcorder
2	equivalent to 4.5-times gain
3	equivalent to 3.5-times gain
4	equivalent to SMPTE-240M
5	equivalent to ITU-R709
6	equivalent to 5.0-times gain

It is recommended to use the No. 5 (ITU-R709) curve in normal use.

As ITU-R709 provides 4.5-times gain around the black, select the No. 6 (×5) curve when better tonal reproduction is required.

3-11-2 Using the Hyper Gamma

The Hyper Gamma is a set of transfer functions designed to be easy to use as previous gamma curve functions and to realize a natural tone in high contrast scenes by taking full advantage of the capacity and wide dynamic range of the CCD sensor.

1 Select HYPER on the first line of TABLE on the <GAMMA> page, and select the hyper gamma table most suitable to the shooting conditions and purpose.

	Effective for shooting	Effective for shooting
	in low-light scenes	from low-light to
	for better tonal	high-contrast scenes
	reproduction of low-	(assuming that 0 dB
	key areas (assuming	gain is used))
	that –3 dB gain is
	used)
Clipping	Hyper Gamma 1	Hyper Gamma 2
the upper
limit to
around
100%
Clipping	Hyper Gamma 3	Hyper Gamma 4
				3Chapter
around
the upper
limit to
109%				Basic
	Hyper Gamma 3		Hyper Gamma 4	Adjustments
109%				and
100%
			Hyper Gamma 2	Settings
	Hyper Gamma 1

These curves are equivalent to those built into the HDW-F900R HD Camcorder.

2 Call the <WHITE CLIP> page of the PAINT menu and

adjust the white clip level to fit the selected hyper gamma.

3-11-3 Using the User Gamma

User gamma curves are initialized with S-LOG at the factory.

S-LOG is a set of data optimized to record image information as digital data materials by using the entire dynamic range of this camera. It assumes digital processing in post production.

You can also create a desired gamma table, using a personal computer on which software CvpFileEditor™1) has been installed and load the table into the camera via a “Memory Stick.”

When a user gamma table is selected, control of gamma (LEVEL or ON/OFF) may become disabled, depending on

Selecting the Gamma 47