It's important to understand this difference, as you could be disappointed with the results if you use one rather than the other. Optical zoom works like the zoom on a traditional film camera. When you push the button to zoom in or out, physical lens elements move inside the camera, reducing the field of view and making the object you're shooting appear closer. Digital zoom, on the other hand, has no moving parts.

Optical zoom is achieved by changing the focal distance of the lens, so there is no loss of image quality. Zoom adjustment is step-less, up to 3X. With digital zoom, the center of the image is extracted and shown on the display. You can toggle digital zoom between 2X and 4X. Recording a 800 x 600-pixel image using 2X digital zoom display data from each CCD pixel as-is, so there is no change in image quality or magnification.

It's important to understand this difference, as you could end up mighty disappointed with the results if you get one...

A4: Optical zoom is the traditional method of physically manipulating the disatnce between 2 lenses to create a different camera view. Digital zooming is a technique in which an electronic processor literally magnifies size of the pixels imaged by an optical lens. There are different techniques, but "grainy" appearance is typically associated with digital zoom, especially when the camera.

These two terms refer to a picture's resolution. Optical zoom increases magnification while maintaining image quality as it moves the lens to zoom in on a subject. Optical zoom is the maximum resolution that the camera can capture. It uses lens movement to focus on distant subjects, but the range is limited. It produces enlargements without color or focus degradation.

You cannot use the optical zoom while recording in Moving Picture mode. Digital zoom is possible when recording movies.

If optical zoom is used alone or when 2X digital zoom is used, image sizes are the same as normal: 1600 x 1200 pixels, or 800 x 600 pixels. When 4X digital zoom is used, however, image size is always 800 x 600 pixels.

The optical keystone angle is the angle between the optical axis and the center of the projected image. This varies by some degrees and is dependent of the position of the zoom lens. This angle is actually a fixed angle and can only be "changed" by turning the zoom lens Digital keystoning gives you the possibility to have a correct square image, even when the image is thrown upwards in desktop mode or downwards in ceiling mode.

Optical Zoom uses a system of lens to produce zooming effect, magnifying part of the distant scenery without degradation in image quality.Its magnification ratio is designed the same as the traditional camera,using the lens to magnify the image.Therefore,the resolution and image quality captured by optical zoom will be intact.

Answer The digital zoom uses the logic IC inside of the digital camera for calculation in order to accomplish the high quality zooming effect similar to that of an optical zoom.

Technically, a coax connection will sound better because there is less processing to the signal. In certain situations, when experiencing EMI, RFI or long distance cable runs, using an Optical cable would be your best choice.

Virtual colonoscopy is an abdominal CT scan where "pictures" of the abdomen are taken and then the images are reconstructed into a 3D replica of the colon. The images are then read by a trained radiologist to look for pre-cancerous polyps or abnormalities inside and outside your colon.

The D-580 Zoom camera has a 4x digital zoom, in addition to the 3x optical zoom, which gives you a total of 12x seamless zoom overall. Simply use the Shooting Mode menu to activate the Digital Zoom feature.