Photography is undoubtedly one of the most important inventions in history–it has truly altered how people conceive the world. Now, we can see everything clearly, including that which is actually many miles or years away from us. Photography lets us encapsulate moments in time and conserve them for years to come.
When selecting a lens, make sure it fits your camera, as not all lenses fit all cameras. Even if you change to a newer model of the same manufacturer’s camera, the old lens may not work. If the lens has an electric zoom, iris, and maybe even focus, these functions could be powered and controlled by a multi-wire cable that connects between the lens and the camera. Therefore, getting the right signals and voltages from the camera to the lens makes it a tricky matter.
Lenses are described by focal length, usually telling you the lens’ widest image angle and the zoom ratio. The focal length measured in millimeters is number derived from a mathematical formula.
If you need to shoot in humid climates, keep your camera and lens sealed securely. Let the two warm up to outside temperatures before you use them. This prevents condensation from forming on your gear. If dampness gets inside your lens, fungus starts to grow and it is nearly impossible to remove.
Choosing a lens for your camera can be one of the toughest decisions to make, especially if your camera is a specialized one. If you want to capture a lot of activity you will not be able to identify minute details at a far away distance. Conversely, while using a lens or lens setting to capture close-up pictures from a distance you must sacrifice a lot of horizontal coverage. Therefore, it is essential to choose the perfect lens for your purposes and camera.
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Article Source: http://EzineArticles.com/?expert=Thomas_Morva
Photography Techniques : Selecting a Camera Lens
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