147. Digital noise reduction function setting [DNR]The digital noise reduction function reduces noise automatically under the condition of low illuminance.The effect level of the noise reduction function is selectable from the following:LOW: Low level of noise reduction (small residual image)HIGH (default): High level of noise reduction (large residual image)8. Black-and-white mode setting [BW MODE]The settings relating to the black-and-white mode can be configured. Follow the procedure below.Step 1Move the cursor to "BW MODE" and select the black-and-white control from the following:AUTO1 (default): Automatically toggles between color and black-and-white images in accordance with the screen brightness (illumi-nance). The black-and-white mode is selected for dark images, and the color mode is selected for bright images.AUTO2: Uses a near-infrared light source at nighttime.ON: Displays black-and-white images.OFF: Displays color images.Note:• The auto back focus function also allows users to correct out of focus when changing between color and black-and-white imag-es. (+ page 25)• If a subject is always moving or the screen is occupied with a uniform color, brightness determination may be not performed suc-cessfully because the brightness is merely determined by information from the CCD image sensor. When "AUTO2" is selected,the wave length of the light source shall be 800 nm or longer.Step 2Press the setting button.→ The "BW MODE" screen appears.Step 3Move the cursor to "LEVEL" and select a brightness level at which switching between color and black-and-white images is performedfrom the following:LOW: Switches from color to black-and-white images when the ambient brightness (illuminance) of the camera is approx. 0.1 lx orless.HIGH (default): Switches from color to black-and-white images when the ambient brightness (illuminance) of the camera is approx.0.2 lx or less.Note:• To obtain color images, a sufficient level of illuminance (approx. 30 lx or more) is required.• The switching illuminance level varies with subjects, light sources, and lenses.• The switching illuminance level varies in accordance with AGC setting. (+ page 12)• The switching illuminances described above are reference values. The switching illuminance shall be decided based on the actualinstallation environment.**CAMERA SETUP**SCENE1ALC ALCSHUTTER OFFAGC ON(HIGH)SENS UP OFFWHITE BAL ATW1DNR HIGHBW MODE AUTO1i-VMDRET TOP END"BW MODE" screen"CAMERA SETUP" screen**BW MODE**(1)AUTO1LEVEL HIGHDURATION TIME .|..S LBURST(BW) ONRET TOP END