The electronic enlarging of the middle portion of an image in order to make the image appear larger on the display. Resolution is reduced and image file sizes are reduced in the process.
Digital method to radically increase a camcorder's or camera's zoom ratio to focus in on a distant subject, as opposed to optical zoom, which uses lens movement and has limited range. Digital zoom enlarges the pixels in a digitized image, reducing its effective resolution. Digital zoom is a convenience, but optical zoom is the critical measure of a camcorder's or camera's magnification capacity. Some DVD players also have digital zoom.
A digital zoom effectively crops the image captured by the camera and discards the photographic information outside the crop. The digital size of the image is therefore reduced. Therefore start with a large file size before cropping
As opposed to an optical zoom, which is based on altering the focal length, a digital zoom relies on projecting a larger image without changing the resolution. Thus, the image appears larger but the picture quality is reduced.
The apparent magnification of an image by a digital camera. This magnification results in the creation of a digital photo with fewer pixels, and thus lower image quality when compared to an optical zoom. (See: Optical Zoom)
Uses digital technology to enlarge an image. Digital zoom does not have moving parts. It is the electronic enlarging of the middle of an image. The pixels at the center portion of the CCD are digitally doubled to make the image appear larger on the display. Existing data is interpolated to create new data. Resolution is reduced as the center pixels are enlarged to fill the display.
The use of electronic manipulation by a digital camera to create the impression of a larger image. The quality of the image degrades rapidly as the amount of digital zoom is increased.
Digital zoom selects pixels from the center of a photo and enlarges the image further. Use digital zoom once you've reached ultimate optical zoom to increase the size of your subject even further.
This is sometimes called a "simulated" zoom. Digital zooms take a small area of an image and enlarge it digitally. The camera "interpolates" to make up the missing information in the image. Digitally zoomed images are rarely as sharp as optically zoomed images.
This increases the range of the optical zoom by electronically enlarging the image , bringing distant subjects up close.
An electronic enlargement of part of the image making it appear closer and bigger, simulating a telephoto lens. The image is actually being cropped, resulting in loss of surrounding pixels and resolution. In some digital cameras and scanners, interpolation is used to offset this loss.
Not a true optical zoom lens, but rather a technique for enlarging part of the image sensor's frame. Not as sharp as optical zoom.
Zooming feature on digital cameras in place of optical zoom. The pixels (picture element; points in a graphic image) are enlarged using the camera's hardware, often resulting in loss of detail.
a cost effective alternative to having no zoom capability, but will not be as clear as pictures taken with an optical zoom lens
a function of digital cameras, they are not found in conventional film cameras
This is a type of zoom on digital cameras that imitates a regular 35mm zoom by enlarging the centre section of the subject. It does not, however, increase the amount of detail, so the further you zoom in, the more the image will degrade.
Zoom effect achieved by enlarging pixels. As the amount of digital zoom on an image increases, quality decreases.
A process that simulates the effect of a camera lens zoom by cropping photos and enlarging the remaining image. Image quality is usually reduced.
Blowing out of an image by digital camera without actually zooming
is very different from the optical zoom. A digital zoom takes the central portion of the high-resolution image and magnifies it by spacing out the pixels electronically. Don't be fooled, it only gives the illusion of an enlarged picture.
Non-optical zoom mode used in digital cameras. Results in lower resolution and poorer image quality.
In some digital cameras the manufacturer makes the choice to not include an optical zoom lens. This makes the camera quite a bit smaller as can be seen with some of the pocket-sized digitals on the market. Some of those pocket cameras offer digital zoom. The camera takes a portion of the image and magnifies it digitally. Unfortunately, these images get fuzzy in a hurry because a smaller amount of information is being used to create a larger image because the camera has to create the missing information.
Feature of digital still cameras and is the cropping of the center of a captured image. Digital zoom crops to the center of an image, then restores the cropped image to the camera's full resolution capacity.
A “fake” zoom which creates a zooming effect by enlarging the image on-the-fly. Unfortunately, when enlarging, the image is severely degraded.
A cropping and interpolation of an image within the camera to get closer to the main subject and mimic a greater zoom without actually gaining any additional image detail. Because it often results in a blurry and pixelated image, you should avoid using digital zoom.
Digital zoom effectively crops the image to show only the zoomed portion. Unlike true optical zoom, this approach does not increase the detail of the image and is of little practical use.
Lets you select an area of the slide to enlarge for easier viewing.
crops and enlarges an area of the picture, resulting in lower resolution
Digital Zoom is not a "true" zoom but in fact a cropping of the centre part of the image. This can be done in different ways but can never make up for a "real" optical zoom when talking image quality.
A digital zoom is not a true zoom, to zoom the camera will take the center of the image and interpolate it to the original size. An optical zoom is preferred over a digital one.
Enlarges the image digitally. Like enlarging an image on the PC, this method will degrade the image.
A simulated zoom. The physical length of the lens does not change. The camera pre-crops the central portion of an image and reduces its resolution giving an appearance of zooming in. Image quality is degraded and contains increased noise (see optical zoom).
Video circuitry that extends the optical zoom range by expanding the central portion of the image sensor to fill the entire screen. At extreme magnifications there are not enough pixels to create a detailed image.
A digital zoom merely "blows up" the image in the viewfinder (or on the LCD) and crops in on a section of it. Enlarging the image in this way results in the reduction of picture quality, unlike an optical zoom.
function available on some camcorders providing electronic magnification of the image.
With digital zoom, the camcorder takes a small portion of the original image and uses interpolation to artificially restore it to its original size. Digital zoom is usually used in conjunction with optical zoom on a camcorder. For example, a camera with 12x optical zoom/120x digital zoom has a 12x zoom lens and software that makes the image appear 10 times closer, for a total zoom of 120x. Because the camcorder is interpolating during digital zoom, expect the picture clarity to decrease as digital zoom increases.
Most digital cameras provide two methods for zooming: optical and digital. Unlike optical zoom, which uses the optics of the lens to magnify the size of an image, digital zoom discards pixels around the edge of an image, fitting the remaining pixels into the same space to give the appearance of zoom. Since digital zoom comes at the expense of resolution, you should always choose a camera based on its optical zoom, not the digital or combined figure.
A way of making an image larger using a digital camera by increasing the size of the pixels. This is done within the camera and usually lowers the quality of the image. Standard analog cameras use optical zooming, which is done with the lens.
Camera feature that involves enlarging the main part of an image to produce an image similar to that of a telephoto lens but with some loss in resolution.
This works by enlarging the central 50% of the image. While this is fine for most uses, if you will be taking a lot of long-range telephoto pictures you might want to consider a camera with an optical zoom function (see below).
An electronic enlargement of part of the image making it appear to be closer and bigger, simulating an optical zoom lens at a telephoto setting. The image is actually being cropped resulting in loss of surrounding pixels and, thus, resolution.
Additional degree of image magnification beyond a camera's optical zoom. Nice to have, but relying on a digital zoom too heavily can result in lost image quality.
A digital magnification of the center 50% of an image. Digital zooms increase the apparent image size by interpolation. They do not increase the amount of image information.
Unlike an optical zoom, the digital zoom takes the central portion of the high-resolution sensor's image to achieve the effect of a zoom. This means that the existing data is not enhanced or added to, merely displayed at a lower resolution, thereby giving an illusion of an enlarged image. All PowerShot cameras utilize the superior optical zoom, which actually augments the data collected by the sensor, rather than merely creating the illusion that the image has been enlarged.
The camera uses software rather than a true optical lens to zoom in on a subject. The camera throws away pixels on the edge of the picture and enlarges the center subject area. In effect reducing Image resolution
The ability to magnify an optical image digitally, using interpolation. Digital cameras can come with quite high levels of digital zoom, but the image quality suffers noticeably as more digital zoom is applied.
Zoom effect in some digital cameras that is not true (optical) zoom, but is instead an enlargement of the information from the center of the CCD or CMOS (image sensor).
Feature of a digital camera that magnifies an image by discarding the pixels on the edge of the image and enlarging the center of the center area. This mimics a greater zoom but doesn't gain any additional image detail.
A digital zoom simply pre-crops the image you're shooting (thereby drastically reducing the resolution) to achieve the appearance of "zooming in".
The process by which a camera takes a small portion of the original captured frame and zooms it digitally with interpolation -- similar to zooming in on an image in an image editor. Generally causes image degradation above 2X to 3X zoom ratios.
Also known as "simulated zoom." With digital zoom, the camera takes a small portion of an image and uses interpolation to artificially restore the file to its original size. Unlike optical zoom, digital zoom does not require any moving parts, so it's much cheaper to manufacture. Unfortunately, digital zoom also reduces the resolution of an image. Anyone can "digitally zoom" images at home by cropping and enlarging a picture with photo-editing software, so this feature is virtually worthless.
A digital magnification of the centre 50% of an image. Digital zooms by nature generate less than sharp images because the new "zoomed" image has been interpolated.
A digital zoom makes the center half of your picture bigger by cutting off the outside. As the image gets bigger, it loses its sharpness.
Allows the user to zoom in on a subject beyond the range provided by the optical zoom lens. Digital zooming crops the center of the digital picture and resizes the new cropped picture to the size of the selected resolution.
Ability to enlarge an image by manipulation of the pixels after being captured by the CCD. This is done in the camera by software that enlarges the captured image. Digital zoom is usually used in conjunction with optical zoom on a camcorder. For example, a camera with 12x optical zoom/120x digital zoom has a 12x zoom lens and software that makes the image appear 10 times closer, for a total zoom of 120x. Image detail will degrade as the amount of zoom applied increases.
A feature that enlarges the subject within an image to fill more of the frame; using a digital zoom reduces the resolution of an image. It is preferable to have optical zoom.
Magnifies the central portion of an image by making the image larger, not by improving sharpness.
This feature puts power in your hands to zoom into or out from your face at a touch. Control exactly how you frame your shot with WebCam Live! Ultra, a 4x Digital Zoom camera that lets you do this and much more.
Electronically magnifies the image. This allows for greater magnification than optical zoom - unfortunately this can lead to degredation of the picture quality depending on the zoom used.
Digital zooms magnify a small area at the center of a digital image. Digital zooms degrade image quality, cause color to fade, and increase digital "noise".
Digital zoom is a method of decreasing (narrowing) the apparent angle of view of a digital photographic or video image. Digital zoom is accomplished by cropping an image down to a centered area with the same aspect ratio as the original, and usually also interpolating the result back up to the pixel dimensions of the original. It is accomplished electronically, without any adjustment of the camera's optics, and no optical resolution is gained in the process.