JVC GY-HM700UXT 132 page operation manual for the GY-HM700 solid state camcord - Page 114
Reproduction of Dark Areas (Black Stretch/ Compress Function
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Camera Features Reproduction of Dark Areas (Black Stretch/ Compress Function) Process the dark areas according to the balance of bright and dark areas in the image to adjust the overall balance of contrast. 1 Adjust [Black Toe] in the [Camera Process] menu according to the captured video signals. 2 Set the luminance point (Point Level) for AStretchB or ACompressB. ● Decide the luminance point (Point Level) at which the dark areas in the image are to be stretched or compressed. ● The luminance point (Point Level) can be set within the range of A5% to 15%B. 3 Adjust the amount of AStretchB or ACompressB. ● Set the amount to stretch or compress the dark areas in the image using [Stretch Level] or [Compress Level]. ● The amount of stretch or compression increases when a larger value is specified. Ⅵ Example To increase the area of 10 % level (Point A in the figure below) in the image under normal condition ([Black Toe] is ANormalB) A Set [Black Toe] to AStretchB. B Set [Point Level] to A10%B. C Set the amount to increase using [Stretch Level] (ALevel 1 to Level 5B). The reproduction of dark areas improves as the 10 % level point A stretches toward point B. (See figure below) OUTPUT When [Black Toe] is AStretchB B When [Black Toe] is ANormalB Increasing the A10%B area A [Point Level] set at A10%B 0 0 INPUT 5% 10% 15% 110