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Digital photography is a form of photography that uses cameras containing arrays of electronic photo detectors to capture images focused by a lens, as opposed to an exposure on photographic film.

Traditional forms of industrial marketing include advertising in trade journals and magazines, renting booths at trade shows, using manufacturer?s representatives to sell products. The market for these traditional advertising mediums have been steadily dwindling as more industrial goods and services buyers go to the internet to find what they are l

Stock Photography is The Supply Of photographs, Which Are Often Licensed For Specific Uses. The stock photo Industry, Which Began To Gain Hold In The 1920s, Has Established Models Including Traditional Macrostock photography, Midstockphotography, And Microstock photography.

Shutter speed is the amount of time the shutter allows light onto the CCD. The shutter speed is measured in seconds (or fractions of a second for most common pictures). The slower the shutter speed, the more motion is recorded by the camera. A tripod might be needed to use slower shutter speeds without blurring the picture. 

Optical zoom leverages the physical change in a lens to adjust the distance between the camera sensor and subject, whereas digital zoom uses magnification technology to enlarge an area of an image, thereby compromising the integrity of the picture by cutting down on the megapixels.

Unless it's a very expensive full-frame model, all digital SLRs will have a focal length conversion (also called a field-of-view crop factor) to deal with. Basically you have to re-train your mind to think in digital SLR, rather than 35mm terms. Let's imagine this scenario. You grab your old Canon Rebel film camera and take a picture