Specifications

Gamma Adjustment (Gamma Mode and Gamma Manual Value)

Gamma Adjustment is used to code and decode luminosity information in video and controls the

overall brightness and color component ratio of an image. It compensates for the nonlinear tonal

reproduction of intensity and colors of output devices such as monitors.

To adjust overall brightness, you can also introduce a signal gain using the Gamma Mode. The

available modes:

• Auto: The camera automatically chooses the best gamma setting. If this setting does not

produce optimal brightness, use the Manual mode.

• Manual: Set the gamma correction in the Gamma Manual Value box.

• Gamma Manual Value: The value can be set from 25 to 100 and will correct the mid-tone

contrast and brightness of the image: The lower the value, the more brightness and contrast

is added to the image.

• Off: No gamma correction.

Support NTSC in 50 Hz Environment

This parameter must be set to On when the electrical network frequency is 50 Hz and the video

standard is set to NTSC. Also, if this is the case, the Sensor Preset parameter should be set to

Fluorescent 2. (See Sensor Preset.)

Maximum Slow Shutter Speed Limit

The shutter allows light to pass through the lens for a determined period of time. The shutter speed

will determine the exposure time and therefore the overall amount of light that will be collected by the

sensor.

With high shutter speeds, the exposure

to light is brief — ideal for capturing

movement. In the example to the right,

a higher shutter speed (short exposure)

was used for the picture on the left.

The amount of time required depends

on the available light and will be

determined by the camera, but the

Maximum Slow Shutter Speed can be set

by the user. The Maximum Slow Shutter

Speed Limit is equivalent to the maximum

exposure time. The sensor will not increase the exposure time if there is enough light.

Another way to improve the low light capability of a camera is to increase the Maximum Slow Shutter

Speed Limit from 2X to 4X, 8X, or higher. The higher the value, the longer the exposure time allowed

by the shutter and the greater the image luminosity, even if the surrounding lighting is low. But it is

A higher shutter speed (left) is ideal for capturing action or

motion.