Digital camera back

Digital camera backs include image sensors for digital image recording. They are attached to the back of analog cameras and allow digital photography with this. They are found mainly in the medium- format and large format cameras. In the medium-format cameras, the back is attached instead of the roll film cassette. Manufacturers of these backs include the company Hasselblad, Imacon, Kodak, Leica, Leaf, Eyelike / Jenoptik, Phase One, and Sinar.

History

The first such digital back for a small SLR camera was developed in 1987 for military purposes from Kodak based on a Canon New F -1: The " Canon New F-1 Electro- Optic Camera ." As a result, more "military applications" - but here based on a Nikon F3 - developed the " Hawkeye II" were named.

The first commercially available digital back for a small SLR camera was offered in 1991 ( by Kodak), it was sold only in conjunction with a modified Nikon F3 as Kodak DCS 100. Kodak offered to 1999 other digital backs for SLRs from Nikon and Canon, and 1995 asked this the entire range of digital SLR cameras dar. In all these cases, Kodak sold the digital backs together with the associated Canon or Nikon cameras. A complete overview can be found on the website of the developer James McGarvey.

From 2005 offered to the Leica Leica Digital-Modul- R for the Leica R8 and R9. 2011 reported a Nikon digital camera back for his old F-series cameras for a patent.

Not to the digital camera rear walls include the Still Video Backs, which were offered as early as 1986 by Minolta, and in 1988 of Chinon.

Variants

Digital camera backs are available in two different types:

Scan back

Together with a scan back is an analog camera into a scanner camera. After scanning principle, the pixels are not simultaneously but successively detected line by line. This result - depending on the resolution - acquisition times of about 40 seconds to several minutes. There are currently backs available that achieve a resolution of about 14,000 × 17,000 pixels ( 250 million pixels without interpolation).

Chip - backs

As in conventional digital cameras, a CCD or CMOS chip is employed, but it has a larger area and a higher number of pixels. Currently, Mark chip backs with 80 million pixels the technical standard With the availability of high-resolution chip backs seems to be the trend for digital image capture and professionals alike landscape photography enforce.

Large amounts of data

At resolutions of 20 million to 250 million pixels and correspondingly large image processing sensors, a rear wall often costs about 20,000 euros, so they are almost exclusively used by professional photographers. Due to the high number of recorded pixels is a great space for storage, the file sizes can reach up to 1500 MB for a picture.

In a studio, it is possible to connect the camera directly to a computer so that there are no problems with the storage of large amounts of data. Many cameras can be controlled directly from the computer, the image is then used to control directly on the monitor available.