International Organization

Autofocus, af (autofocus system): a system whereby the camera automatically focuses the image of the selected subject. Automatic Camera (Automatic camera): camera with built-in light meter, automatically adjusts the lens opening (aperture), shutter speed, or both simultaneously, to ensure correct exposure. Most often, the people of these cameras is called 'soap holders'. ev (Exposure (light number) – code number, which characterizes the conditions of photography and which serves to determine exposure (job couples Speed / aperture). ev 1 at iso 100 matches ekspopare 1s and F 1,4. Each successive integer ev corresponds to a doubling exposure. iso International Organization for Standardization.

In pictures iso is used to indicate sensitivity of photographic materials. The iso standard was introduced in 1983 and replaced the old designation asa (American Standards Association. In pictures asa is used to indicate sensitivity of photographic materials) and din (German Industrial Standard. The pictures used as a unit of the sensitivity of photographic materials). Light sensitivity to light, the iso number is denoted. as, for example, iso 200. The higher the number, the greater sensitivity of the film. raw – Capture Format.

It allows you to save a picture in such a form in which it is 'Saw' matrix of the camera. The quality of entries in this format is much higher than jpeg, because raw used 'lossless', if any, is saving without compression. ttl (Through The Lens – through the lens) – is used in two senses, the first – A metering through the lens, the second meaning – it's flash control system, also using metering through the lens.

The Camera

Long-focus lenses (telephoto) allow you to remove objects from a distance. Zumiruemy lens of allows you to combine the advantages Wide and tele lens. If the lens of the camera has an approximate 3X, which means that its focal length can be increased threefold. Most digital cameras have a focal distance approximately 35mm do105mm. Source: Viacom. 35mm wide-angle lens of a normal and a telephoto lens of 105mm. Some digital cameras have zoom 8X or 12X, basically they all have the same minimum focusing distance of 35mm, but much greater than the maximum. Almost all digital slr cameras support interchangeable lenses, and allow you to choose the lens of who is best suited for a particular case.

Long-focus lenses are good if you need shoot from a distance, but if you do not have a tripod to make sure that the camera has image stabilization, it compensates for camera shake hands. Otherwise, your photos will be blurry. Stabilization images can significantly improve the quality of the photos were taken in hand at longer focal lengths. Do not buy a digital camera with bigger zoom without image stabilization, if you're not going using a tripod. The value of the digital zoom can be safely ignored, only to see the optical zoom. Digital zoom dramatically reduces the quality of photos, virtually the same thing you can do on a computer using graphical editor. At the time of this writing, I think most people would choose from the following types of digital cameras: Ultra-compact zoom lens with a 3X.