Axis Communications AXIS P5522E user manual White Balance, Wide Dynamic Range, Exposure Settings

AXIS P5522–E PTZ Dome Network Camera

Video

IR cut filter

The IR cut filter prevents infrared (IR) light from reaching the image sensor. In poor lighting conditions, for example at night, or when using an IR lamp, set the IR cut filter to Off. This increases light sensitivity and allows the product to “see” infrared light. The image is shown in black and white when the IR cut filter is off.

If using automatic Exposure control, set the IR cut filter to Auto to automatically switch between On and Off according to the lighting conditions.

White Balance

White balance is used to make colors in the image appear the same regardless of the color temperature of the light source. The Axis product can be set to automatically identify the light source and compensate for its color. Alternatively, select the type of light

source from the drop-down list. For a description of each available setting, see the online help.

Wide Dynamic Range

Wide dynamic range (Dynamic Contrast) can improve the exposure when there is a considerable contrast between light and dark areas in the image. Enable WDR in intense backlight conditions. Disable WDR in low light conditions for optimal exposure.

Note

This setting is only possible when using automatic exposure control.

Exposure Settings

Configure the exposure settings to suit the image quality requirements in relation to lighting, frame rate and bandwidth considerations.

Select Enable Backlight compensation if a bright spot of light, for example a light bulb, causes other areas in the image to appear too dark.

The Exposure control setting is used to adapt to the amount of light used. Select one of the following modes:

•Auto is the default settings and can be used in most situations. Shutter speed, Iris and Gain are automatically set to produce optimum image appearance for different lighting situations.

•Manual Shutter allows you to manually adjust the shutter speed. Iris and Gain are set automatically.

•Manual Iris allows you to manually adjust the iris opening in the lens. Shutter speed and Gain are set automatically.

•Manual allows you to manually adjust Shutter speed, Iris and Gain.

Shutter speed - A slower speed in dark conditions will help to produce a brighter image, but will produce fewer frames per second, which may cause blurry images during motion.

Iris - A larger F-value means less light sensitivity, but a larger depth of field.

Gain - Measured in decibels (dB), gain describes the amount of amplification applied to a signal, in this case the visual information in the image. A high level of amplification may provide a better image in very low light situations. A high gain will also increase the amount of image noise.

Max exposure time - Increasing the exposure time will improve image quality, but decrease the frame rate. There may also be an increase in motion blur.

Max gain - Max gain limits the amount of gain that can be applied to the image in Exposure control modes with automatic gain adjustment.

Exposure zones - This settings determines which part of the image is used to calculate the exposure. For most situations, the Auto setting can be used. For particular requirement, select a predefined area.

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