Sony 900, 930, 950 manual Precise Handling of Highlight Position

3	(2) Auto Knee	for best reproduction of the high lights. The Adaptive
	When the Auto Knee button on the MSU or RCP panel	Highlight control function can also be used in
	is pressed, it optimizes the knee point and knee slope	conjunction with Auto Knee.

Figure 3-2: Auto Knee curve image

Input signal level

white clip

auto slope

Output signal level

point limit

auto knee circuit

(3) Gamma

New 12-bit A/D conversion more precisely defines the required gamma characteristic by using a gamma curve created from 48 segments. This is in comparison with the 32 segments in the previous camera range.

(4) Black Gamma

Black Gamma allows control of the linear part of the gamma characteristic, providing adjustment of the shadow areas of the picture during shooting.

Also, the Black Gamma range can be adjusted depending upon the situation.

(5) Black Clip

Improvements in the Black Clip circuitry have improved the signal/noise ratio for more natural reproduction.

(6) Auto Black/White

The HDC-900 Series provides superb accuracy in black and white balance.

3-2.Precise Handling of Highlight Position

(1) Optimized bit assignment Photo 3-3: Knee saturation ON and OFF

Highlights are compressed by a pre-knee circuit before A/D conversion, providing the most efficient utilization of the 12-bit A/D conversion process.

(2) Knee saturation

Knee Saturation eliminates both the 'washed out' effect and hue changes in overexposed areas of a picture, providing more natural color reproduction.

Washed out

Normal

On

HDC-900/950/930 Series Product Information Manual Chapter 3 Benefit of Sony ADSP (Advanced Digital Signal Processing) 44