Hitachi Z-HD5000 Multi-application HDTV
Studio and Field Production Camera
Premier user of
14-bit analog-to-digital conversion
Hitachi cameras were the first on the market to recognize and implement 14-bit analog-to-digital conversion. The Z-HD5000 takes
full advantage of the increased dynamic range output of the NEW i m a g e r s b y u s i n g 3 ( R e d , G re e n , B l u e c h a n n e l ) 1 4 - b i t
analog-to-digital converters. These high speed ADCs are the bridge between the serial output of the CCDs and the advanced Hitachi processor. They assure that every nuance of the image captured and, converted to electrical energy by the sensors is interpreted in the digital domain resulting in faithful image reproduction.
Hitachi’s advanced digital signal processing
Each essential part of the Hitachi Z-HD5000 camera system has its own DSP processor. Different DSP ICs are used independently for the HDTV camera head processing, the transmission system and the Camera Control Unit (CCU) processing. The new, power-efficient Digital Signal Processor LSI’ s are designed under the 65nm rule with dynamic processing capability in excess of 30-bits per pixel, per RGB channel. Hitachi’ s DSP processors are designed for and, can adopt to progressive readout HDTV sensors. The processing dynamic headroom of the Z-HD5000 in theory (14-bit), allow for signals in excess of 85dB to be faithfully reproduced. Additional digital encoding at the camera head and CCU provides low interference and high signal integrity for both digital and analog outputs.
An outstanding overall signal-to-noise ratio specification of 58dB is achieved by use of our own low-noise circuit technology. The standard sensitivity is rated at F10 with 2000 lx.
Even at high gain, clear images are obtained with little noise.
Digital signal transmission via Hybrid Fiber Optical Cable
The Z-HD5000 camera system utilizes industry standard Hybrid Fiber-optic cable connectors made of high-strength stainless steel to insure durability and reliable performance under the most demanding TV Studio and Field production circumstances. All command audio and video signals to and from the camera are digitally transmitted hence, totally immune to EMI/ RFI interference. Camera power and cable condition supervision are also performed when using the Hybrid Fiber-Optic Cable (HFOC). Full Auxiliary (up to 4 analog or digital, HD or SD) video return and individual Teleprompter facilities are also available with the Z-HD5000 transmission system. The maximum HFOC length with applied camera power and fully operational facilities is 1,000 meters* (3,280 feet*) .
Unique to cameras in the Z-HD5000’ s price range are optical power meters at the camera head (via engineering menu) and on the front of the CU-HD5000 camera control unit. These meters indicate the optical condition of both the receive and, transmit signals independently to accurately depict the proximity to the “digital cliff”, maximum cable distance or provide basic HFOC diagnostics in the field.
*HFOC distance with applied CCU power differs depending on the system configuration.
It is dependant on the type of lens used, viewfinder, studio Adaptor, teleprompter and other accessories that may be connected and thereby consuming power otherwise available for the camera head.
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Superb High Definition picture reproduction & enhancement tools
Luminance response tools
Black stretch
The Z-HD5000’ s Black stretch function allows for better reproduction of dark or underexposed areas by evenly raising the luminance response without changing the pedestal or white clip/ knee settings. It is especially useful in high contrast image venues, outdoors or sports production.
Ultra-Gamma
A new and useful function implemented in the Z-HD5000 is the Ultra-Gamma function. It dramatically increases the exposure latitude of the camera in shooting conditions where lighting and scenery vary widely in intensity. Seven different ultra-gamma responses are pre-programmed to suit just about every possible adverse shooting condition.
Color reproduction excellence
Skin-tone masking
The Skin-tone masking function provides “fine Painting” (hue and saturation) of Skin tones without affecting other colors in the scene. This functions additional and independently from the linear and 12-vector-masking functions thereby adding an additional color-correction (Triple-masking) Channel to the overall image color control.
ULTRA GAMMA
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150 |
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VIDEO |
125 |
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100 |
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OUTPUT |
75 |
Standard |
1 (90%) |
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2 (85%) |
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50 |
3 (80%) |
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4 (75%) |
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25 |
5 (70%) |
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6 (65%) |
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7 (50%) |
0 |
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0 |
100 |
200 |
300 |
400 |
500 |
600 |
INPUT SIGNAL
Picture sharpness enhancement
Skin-tone Detail
The Skin-tone Detail functions allow a flesh color-based softening of the image to achieve the impression of more youthful TV personalities. 2 individual memories exist as well as a function to automatically detect the hue, saturation and luminance of the Skin-tone to be affected. This function is not limited to Skin-tones only ; it can increase or decrease the sharpness of any pair of colors in the image.
Skin tone masking OFF |
Skin tone masking ON (Simulated image |
Chroma Saturation
In addition to the extensive colorimetry controls offered in the Z-HD5000, the overall color saturation can be varied to achieve “dramatic” or artistic “effects”.
Original Image |
Color corrected (Simulated image |
Knee Saturation
The Knee Saturation function dynamically restores color saturation to scene highlights above the Knee point. Color-saturated highlights lost in overexposed scenes are now visible. This function provides excellent results in ; for example when imaging : high-contrast, sunny outdoor scenes, fireworks, concerts, theatre stage lighting, and colored night scenes.
Skin-tone Detail OFF |
Skin-tone Detail ON (Simulated image |
High-chroma detail
The High-chroma detail adjustments allow precise control of the detail level in highly color-saturated portions of the picture such as the petals of a rose or a colorful fabric.
High-chroma detail OFF |
High-chroma detail ON (Simulated image |
Knee Saturation OFF |
Knee Saturation ON (Simulated image |
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