Condensation, Characteristic CCD Phenomena

Head drum

Videotape

Condensation

●If the unit has been cooled down in a cold place and is then carried to a warm place, the moisture contained in the warm air may adhere to the head drum or tape guides and be cooled into water droplets. This phenomenon is referred to as condensation (dewing). When this occurs, the head drum and tape guides are covered with droplets allowing the tape to stick to them, leading to tape damage.

●Condensation occurs in the following cases:

• When the unit is suddenly moved from a cold place to a warm place.

• When a room heater has

just started or when the unit is exposed directly to cold air from an air conditioner.

• When the unit is placed in a very humid place.

Do not leave the videocassette inserted when moving the camera under conditions where the temperature environment changes.

After moving the unit, do not use until the internal parts have stabilized.

●When condensation occurs in this unit, the “VTR WARNING (DEW)” appears on the LCD screen and the viewfinder screen.

VTR WARNING (DEW)

To remedy, leave the unit with the power ON and wait until the WARNING indicator disappears.

●Prevention of condensation

When quickly transporting the GY-DV300 from a cold to a warmer place, first take out the cassette. Then place the GY-DV300 in a plastic bag and seal it before transporting the camera. Leave the GY-DV300 in the sealed plastic bag until the camera has the same temperature as the surroundings. This will prevent condensation.

Characteristic CCD Phenomena

Smear and Blooming

Due to the physical structure of a CCD it is possible to induce vertical streaking (called “smear”) when shooting an extremely bright light source. Another effect is the expansion of light around a bright light or object (called “blooming”).

The CCD employed in this unit is characterized by inducing very little smear or blooming. Nevertheless, please be careful when shooting a bright light source.

Smear

(Vertical pale streaking appearing at high luminous object)

High luminous object (Electric light, sunlight, etc.)

						Blooming




						(Blurring in highlight)
	Monitor screen					(Blurring in highlight)
	Monitor screen

Moire or Aliasing

Shooting stripes or fine patterns may cause a jagged effect or a banding in fine mesh patterns.

White dots

High temperatures can cause CCD sensor pixels to malfunction with the effect of white dots in the image. This condition is conspicuous especially when gain is applied.

This is a characteristic of the charged-couple device (CCD). As far as possible, use the unit under conditions where the temperature of the unit does not increase.

E-11

GY-DV301, GY-DV300 specifications

The JVC GY-DV300 and GY-DV301 are part of JVC's renowned D-Series of professional camcorders, known for their impressive video quality and user-friendly features. Launched in the early 2000s, these models gained widespread recognition for their reliability and versatility in various broadcasting and filmmaking environments.

Both camcorders utilize a 1/3-inch CCD sensor that delivers high-quality images with a resolution of up to 720 x 480 pixels in standard definition. The GY-DV300 is particularly notable for its innovative pixel shift technology, which enhances image resolution and detail by shifting the sensor pixels to improve clarity and reduce artifacts. This feature is especially beneficial for capturing finer details in dynamic scenes, making it suitable for both documentary filmmaking and news reporting.

One of the standout features of the GY-DV301 is its advanced lens system, which provides a 16x optical zoom with a focal length range that allows for excellent versatility in framing shots. The Fujinon lens used in these models is well-regarded for its superior optical performance, ensuring crisp, vibrant images in various lighting conditions. Additionally, both camcorders come equipped with a built-in ND (neutral density) filter, enabling filmmakers to control light exposure creatively without compromising on depth of field.

The user interface of the GY-DV300 and GY-DV301 is designed with professionals in mind. The camcorders offer manual controls for focus, iris, and white balance, allowing users to have precise control over their shooting parameters. The ergonomic design ensures that the camcorders are comfortable to use over extended periods, with a range of customizable buttons and settings readily accessible.

In terms of recording formats, the GY-DV300 and GY-DV301 support DV format recording, which offers high-quality digital video suitable for editing and broadcast. They also feature multiple connectivity options, including FireWire and composite outputs, making them compatible with a wide array of editing systems and broadcasting equipment.

Overall, the JVC GY-DV300 and GY-DV301 represent a significant step forward in video technology during their time, merging advanced imaging capabilities with robust professional features. Their blend of quality, flexibility, and an intuitive operational design has made them enduring choices for videographers and broadcasters alike, solidifying JVC's reputation in the professional video market.