Dark-frame subtraction — In digital photography, dark frame subtraction is a way to minimize image noise for pictures taken with long exposure times. It takes advantage of the fact that a component of image noise, known as fixed pattern noise, is the same from shot to… … Wikipedia
Dark current (physics) — In physics and in electronic engineering, dark current is the relatively small electric current that flows through photosensitive devices such as a photomultiplier tube, photodiode, or charge coupled device even when no photons are entering the… … Wikipedia
Image noise — Noise clearly visible in an image from a digital camera Image noise is random (not present in the object imaged) variation of brightness or color information in images, and is usually an aspect of electronic noise. It can be produced by the… … Wikipedia
Minolta Dimage 7, 7i, 7hi — Minolta DiMage 7i The Minolta DiMage 7, 7i, 7Hi series is a pro sumer line of digital electronic viewfinder cameras from Minolta. These are also known as bridge digital cameras. They are capable of capturing images in the 5 megapixel range. The… … Wikipedia
Астрофотография — Астрофотография, астрография, астрономическая фотография способ проведения астрономических наблюдений, основанный на фотографировании небесных тел с использованием астрографов. Преследует две основные цели: Исследовательские. Преимущество… … Википедия
Olympus E-1 — Type Digital single lens reflex Sensor Kodak KAF 5101C Four Thirds System FFT CCD Maximum resolution 2,560 × 1,920 (4.9 mi … Wikipedia
Raw image format — Infobox file format name = RAW image file extension = .raf (Fuji) .crw .cr2 (Canon) .tif .k25 .kdc .dcs .dcr .drf (Kodak) .mrw (Minolta) .nef .nrw (Nikon) .orf (Olympus) .dng (Adobe) .ptx .pef (Pentax) .arw .srf .sr2 (Sony) .x3f (Sigma) .erf… … Wikipedia
Nachtaufnahme — Brandenburger Tor in Berlin. Häufiger Fehler bei Nachtaufnahmen: zu viel Licht (auch Überstrahlung) ergibt zu wenig Kontrast in den hellen Bereichen des Bildes … Deutsch Wikipedia
cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… … Universalium
Laser beam profiler — A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers ultraviolet, visible, infrared, continuous… … Wikipedia
