Drum scanner
High quality and very expensive scanner used by repro houses to scan transparencies, negatives and prints. Originals are mounted on the curved surface of a transparent drum.
Drum scanner
Techniques Glossary Drum scanner
High quality and very expensive scanner used by repro houses to scan transparencies, negatives and prints. Originals are mounted on the curved surface of a transparent drum.
drum scanner
A high-resolution scanning device used in the most demanding professional applications. They can often be the source of extremely large files. See scanner and film scanner.
dumb frame buffer ...
drum scanner
A 'high end' device using photomultiplier tube technology to capture images which are mounted on a cylinder.
Dublin Core ...
drum scanner
scanning equipment where the image rotates infront of scanning sensors that sharpen the image and convert RGB to CMYK.
Drum scanner
A high-quality image-capture device. The image to be capture is wrapped around a drum that spins very fast while a light source scans across it to capture a digital version of the image.
Drum scanner courtesy of Fujifilm.
Although digital cameras are the most popular devices used to capture photos, scanners are still widely used to scan slides, negatives, and prints.
Drum Scanners
Providing resolutions as high as 11,000 dpi and more, drum scanners produce digital files that can lead to exceptional enlargements of more than 800%, in addition to offering a wide dynamic range with minimal noise.
Rotary-drum scanners provide the highest quality for converting images from film or prints, but they are very expensive. Rotary-drum scanners are capable of producing resolution ranging from 1,000 to 5,000 dpi.
This first gifts of the digital revolution for photographers who wish to compete with painters were the drum scanner and line-at-a-time digital printing systems. After exposure, the image never went through another lens.
A) There's no question that a high-end drum scanner or an Imacon scanner will give superior scans. But will you see that much difference in the size prints you want to make?
There are three types of scanners available: flatbed, drum scanners, and film scanners. Flatbed scanners are fine for prints, but not negatives and slides.
However, Nikon and Minolta make very nice medium format film scanners that may compete with drum scanners.
Combined with a drum scanner and an Iris printer, you will enter a world that rivals any darkroom. Using Photoshop instead of an inexpensive editing program is like going from a $50 camera to a $400 camera.
If you can afford one, then drum scanners will give consistently better results as they cope better with high contrast images, often a feature of underwater wide-angle shots, where the sun or surface is in the picture.
Photo CD - Kodak's professional service where they process your film and then scan the images using a very expensive drum scanner and output these images to a CD.
The terms scanning aperture and sampling aperture are often used to refer to the opening through which an image is sampled, or scanned, for example in a Drum scanner, an image sensor, or a television pickup apparatus.
A Drum Scanner with a Dynamic Range of 3.8D and a bit depth of 48 will produce a much higher quality, richer, more detailed scan than a Flatbed Scan with a Dynamic Range of 2.5D and a bit depth of 24 at the same scan resolution.
SCANNER - An input device in which to capture a piece of artwork onto a computer as a digital file. A scanner uses light sensitivity to translate the picture into a pattern of dots. Types of scanner: Flatbed scanner, drum scanner, ...
Drum scanners are used by the publishing industry to capture incredibly detailed images. They use a technology called a photomultiplier tube (PMT). In PMT, the document to be scanned is mounted on a glass cylinder.
 See also: Scanner, Image, Camera, Film, Light
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