Selection Function

VARIABLE In clear scan mode

(Continued) You can set the shutter speed in units of 1 H (horizontal scanning time: 64µs). The setting is made in units of 1H. This setting can be used to reduce noise (horizontal patterns) when shooting a computer screen.

1Display 312/625 by pressing the DATA UP and DATA DOWN button together.

2Select the setting which best reduces reduce the noise by pressing the DATA UP button while observing the noise on a monitor screen.

Each time you press the DATA UP button, the shutter speed changes in units of 1 H from 312/625 through 1/625.

Shutter speed calculation

Example: Shutter speed in 250/625 (H) 250 x 64 µs (1H) + 35.6 µs (constant) = 16035.6 µs = about 0.016 seconds.

Selection Function

CCD IRIS When an excessive amount of light passes through the lens, this function increases shutter speed to cut exposure to the equivalent of up to 4 aperture stops. The function is useful for microscope applications where lighting that is just right for the human eye is often too bright for the video camera.

When CCD-IRIS is set to ON, the excessive incident light is automatically decreased to an appropriate level for the video camera. The CCD iris function is also useful for cutting out excess incident light that is not cut out by the auto-iris lens in scenes containing very bright patches (such as snow, or sea water reflecting sunlight).

You can use CCD IRIS in combination with AGC, and/ or AUTO IRIS control.

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