Chapter 8 Capturing Images with Advanced Setting Menu96Photographing andPlaying Images(2) Selecting an SD (shading) valueShading adjustment refers to correction of unevenness in sensitivity between the center and rim of the screen due to lowerlight intensity or other causes. You can perform shading adjustment by the illumination and optics methods.DS-L3 provides two type of shading adjustment: standard adjustment values of 10% to 50% and seven user-definedadjustment values.Use of the standard adjustment values and user-defined shadings• Use the 10% to 50% standard adjustment values for compensating the light intensity degradation from the centerto the rim of the screen.Select a value viewing the screen.• A user-defined shading is used for correcting an asymmetrical unevenness. The shading condition is measuredin advance, and an adjustment value that has been registered is used.1 Display the [CAM MENU: NR/SD/SET] screen.2 Press the [SD] button.The [SD] submenu is displayed.3 Select a shading adjustment value from the followingoptions:For details of each option, refer to the table below.• [OFF]• [10%] to [50%]• [USD1] to [USD7]Selecting any of them closes the submenu, and the icon ofthe [SD] button changes.Setting an SD (shading) valueSD (shading) adjustment value optionsOption DescriptionOFF Shading is not performed.10% to 50% Sets the shading adjustment value to 10%, 20%, 30%, 40%, or 50%, respectively.User SD1 to SD7 Uses a registered user-defined shading adjustment value. Up to seven values can be registered.Registration of user-defined shading adjustment valuesYou need to register adjustment values in advance to use user-defined shading. For how to register them, refer to“(3) Registering SD (shading) adjustment value”.Adjustment is not made if you select an unregistered user-defined shading.Setting for power-onThe shading adjustment value selection is saved at the time of power-off and recovered at the next power-on. If[CUSTOM No] has been configured in the [SETUP MENU: MAIN], the setting specified by the custom setting isused.Automatic change of setting valuesIn some cases, the SD adjustment value changes with the following operation:• Execution of [CLR SET]:Executing [CLR SET] in the [CAM MENU: NR/SD/SET] screen sets SD adjustment value off.Shading disabled with ROI-L/S or C.SCAN modeIf the image mode is set to [ROI-L], [ROI-S], or [C.SCAN], shading adjustment is disabled, and the [SD] and [SDSET] buttons will be unavailable.132Select ashading value.
