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Compared to film, digital cameras are capable of much higher speed (sensitivity to light) and can perform better in low light or very short exposures. The effective speed of a digital camera can be adjusted at any time, while the film must be changed in a film camera to change the speed.
For digital photo cameras ("digital still cameras"), an exposure index (EI) rating—commonly called ISO setting—is specified by the manufacturer such that the sRGB image files produced by the camera will have a lightness similar to what would be obtained with film of the same EI rating at the same exposure. The usual design is that the ...
While the fastest lenses in general production in the 2010s were f / 1.2 or f / 1.4, the 2020s have seen several f / 0.95 lenses, see below.. What is considered "fast" has evolved to lower f-numbers over the years, due to advances in lens design, optical manufacturing, quality of glass, optical coatings, and the move toward smaller imaging formats.
1 ⁄ 8000 s: The fastest speed available in production SLR cameras (as of 2013), also the fastest speed available in any full-frame DSLR or SLT camera (as of 2013). Used to take sharp photographs of very fast subjects, such as birds or planes, under good lighting conditions, with an ISO speed of 1,000 or more and a large-aperture lens.
Some models of microscope use automatic electronic models for reciprocity failure compensation, generally of a form for correct time, T c, expressible as a power law of metered time, T m, that is, T c =(T m) p, for times in seconds. Typical values of p are 1.25 to 1.45, but some are low as 1.1 and high as 1.8. [20]
Full frame: 24.4 F-mount: 100 1005 51 50 6400 5 3 yes no CF (2x) 160x157x88 1220 Dec 2008: Nikon: D3S: Full frame: 12.1 F-mount: 100 1005 51 100 102400 9 3 yes yes CF (2x) 160x157x88 1246 Oct 2009: Nikon: D850: Full frame: 45.7 F-mount: 100 180000 153 64 25600 7: 3.2 yes yes CF + XQD: 146x124x79 1005 Oct 2017: Nikon: D810: Full frame: 36.3 F ...