Sony DXC-990 B Appendix, Cleaning, Aliasing, Blemishes, Ventilation, the camera:, Vertical smear, Transportation, White speckles, slightly jagged, a fault within the camera

Ventilation

To prevent heat buildup, do not block air circulation around the camera.

• Extremely hot or cold places (Operating

temperature: –5°C to +45°C [23°F to 113°F])

• Exposed in direct sunlight for a long time, or close to heating equipment (e.g., near heaters)

• Close to sources of strong magnetism

• Close to sources of powerful electromagnetic radiation, such as radios or TV transmitters

• Locations subject to strong vibration or shock

B Appendix

Precautions	Typical CCD
	Phenomena
Operating or storage location
Operating or storing the camera in the	The following phenomena may appear on

following locations may cause damage to the monitor screen while you are using the

the camera:	DXC-990/990P color video camera. These
	phenomena stem from the high sensitivity of
	the CCD image sensors, and do not indicate
	a fault within the camera.
	Vertical smear
	A “smear” may appear to extend vertically
	from very bright subjects, as shown below.

Video monitor screen

Pale vertical smear

Very bright subject (such as an electric lamp, fluorescent lamp, sunlight, or strong reflected light)

Transportation	This phenomenon is common to CCD
	imaging elements using an interline transfer
When transporting the camera, repack it as
originally packed at the factory or in	system, and is caused when electric charge	Appendix
	induced by infrared radiation deep within

materials equal in quality.	the photo sensor is transferred to the
	resistors.
Cleaning	Aliasing
• Use a blower to remove dust from the lens
	When shooting fine stripes, straight lines or
or optical filter.
	similar patterns, the lines may become
• Use a soft, dry cloth to clean the external
	slightly jagged.
surfaces of the camera. Stubborn stains
can be removed using a soft cloth	Blemishes
dampened with a small quantity of
	A CCD image sensor consists of an array of
detergent solution, then wipe dry.
	individual picture elements (pixels). A
• Do not use volatile solvents such as
	malfunctioning sensor element will show up
alcohol, benzene or thinners as they may
	as a single pixel blemish in the image. This
damage the surface finishes.
	is generally not a problem.
	White speckles
	When you shoot a poorly illuminated object
	at a high temperature, small white dots may
	appear all over the entire screen image.

Precautions/Typical CCD Phenomena 37 GB