Messoa SPD982, Руководство пользователя, Страница: 28 / 57

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Exposure
Figure 4 - 7: Exposure Settings
● Auto Exposure
• Exposure modes control the light intensity of picture. There are three auto exposure types, which are AES (Automatic
Electronic Shutter), ALC (Automatic Lens Control), and Flickerless for adjustment depending on conditions differed.
• Slow Shutter: Slow Shutter can be enabled if the sensitivity is still not good enough under “High” gain condition in the dark.
Optimal image level can be maintained by appropriate gain and shutter combination that determined automatically inside
the unit system. Slow Shutter can be selected from OFF, 1/30, 1/15, and 1/7.5 when camera type is set to NTSC, while under
PAL, the slow shutter available options ranging from 1/25, 1/12.5, and 1/6.25. As slow shutter activates, the exposure time
becomes longer and frame rate becomes smaller, and moving objects may result in blurred images.
• Max Gain: Users can adjust preferred max gain value ranging from 24 to 36 under auto exposure mode.
● Manual Exposure
• Shutter Speed: When exposure mode is Manual, shutter speed can be customized by users’ preference based on different
applications. The available shutter speed options vary from NTSC to PAL system.
• Manual Gain: When exposure mode is Manual, users can adjust preferred manual gain value ranging from 0 to 36. The
detailed explanation is same with the above “Max Gain” section.
● Advanced Exposure
• EV Compensation: It is the exposure compensation telling the unit by setting value from -2 to 2 with intervals of per 0.5 for
scenes to be either darker or brighter. (Unavailable when exposure mode is Manual)
• Day & Night: Set Day/Night function by selecting among Auto/Color/BW modes. If you select Color mode, the camera is
forced to stay in Day (Color) mode all day and BW for Black & White (Night) mode.
• Switching Sensitivity: To determine the sensitivity of the day/night mode switching mechanism. Darker represents camera is
prone to auto switch between day/night mode for minor light intensity change. On the other hand, Lighter indicates camera
is going to switch between day/night mode on the basis of major changes of surrounding light intensity.
• Delay Time: To set the delay (buffered) time for switching between day/night mode. Fast means camera instantly switch
with nearly no delay time between day/night mode. And Slow stands for camera has a longer delay buffered time prior to
switching between day/night modes.