Sim2 Multimedia HTL40 installation manual Picture, Brightness, Contrast, Colour, Tint, Sharpness

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Some adjustments (e.g. BRIGHTNESS and CONTRAST) are associated with a numerical value that can be varied within the set limits us- ing the ▶ and ◀ keys. For others (e.g. VIDEO TYPE) you can choose between two options presented on the same line (and selectable using the ▶ and ◀ keys).

Other adjustments (identified by by the symbol <) are associated with submenus, which appear as a superimposed window in which the selection is made with the ▲ and ▼ keys (Fig.23).

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Fig. 23A

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Fig. 23B

These submenus are accessed by pressing the < key. To quit the submenu and return to the higher level press the MENU+/- keys. Press ESC on the remote control or keypad to abandon the menu display or wait for it to disappear automatically after the number of seconds set in the SETUP page.

PICTURE

This menu features the adjustments related to picture quality. Adjust- ments that are not available for a specific input will not be displayed on the menu. Table 3 summarises the adjustments available for each input. For a complete overview of the on-screen menus, consult ‘ON SCREEN MENU LAYOUT’ in the “ADDITIONAL INFORMATION” section.

BRIGHTNESS

Use this control to adjust the darker areas of the picture (black level), without significantly affecting bright areas. For correct adjustment it may prove useful to display a grey scale with at least twenty bands. Now try to reduce the brightness of the black band as much as pos- sible while ensuring that it can still be distinguished from the adjacent band with brightness slightly higher than black. Alternatively use a scene composed of black objects alongside other dark coloured objects and try to keep all the objects separately identifiable.

CONTRAST

Use this control to adjust the brighter areas of the image (white level), without significantly affecting dark areas. For correct adjustment it may prove useful to display a grey scale with at least twenty bands. Now try to increase the brightness of the white band as much as possible while ensuring that it can still be distinguished from the adjacent band with brightness slightly less than white. Alternatively use a scene composed of well-lit white objects surrounded by light coloured objects with lower level lighting, and try to ensure that all the objects remain separately identifiable.

COLOUR

This control (also called Saturation) increases or decreases the picture colour intensity. When set to zero, colour images will be shown in black and white. Increasing the value, try to find the point at which the colours look natural: suitable references include skin tones and grass in landscape shots.

TINT

Controls the purity of colours. Basically determines the red-green ratio of the picture.

Reducing the value will boost the red contents of the picture, in- creasing it will boost the green tones. For this adjustment use skin tones or a test card image with colour bars as a reference.

SHARPNESS

This adjustment serves to modulate the signal to increase or decrease the level of picture detail. When the sharpness value is reduced the image details appear less pronounced, while increas- ing the value raises image definition, making the outline of objects sharper. Note that an excessively high value may result in a ‘noisy’ picture and the edges of objects may appear unnaturally clearly defined.

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