Saturday, December 19, 2009

About my SLR Camera

Traveling to places takes me to capture sceneries and natural pictures of people, nature or just about anything that struck my sight. In fact, I always have with me my SLR camera. I just love this and exact photographs of everything that I want to capture.

One of the main benefits of an SLR camera is that its lens can be upgraded or augmented with additional specialist lenses. Still, it makes sense to work out which other lenses you may want before you buy a camera. The lenses must fit the camera, which means sticking to the brand or going for a Sigma or Tamron lens, as these are available in a range of lens mounts.

The most important lens specifications are its zoom rand (expresses as a pair of focal lengths) and the amount of light is can capture (referred to as the aperture size).

Most readers will be familiar with zooms being described as 3x or 12x. These figures tell us the difference in magnification between the wide-angle (zoomed out) and telephoto (zoomed in) ends of the zoom.

The focal length, which is expressed as something like 18-55mm, indicates the specific magnification range of a lens. On a consumer digital SLR, any values below 30 mm are considered wide-angle and any above 80 mm are telephoto, the values in between are referred to as standard. On the other hand, the aperture of the lens is the size of the hole that lets light through. The bigger the hole, the more light is captured and the better the picture quality. Bigger holes make the focus tighter, so background and foreground objects more blurred. This is preferable in many situations, as blurring the background draws attention to the subject.

Most SLR lenses are useless at macro focus, so extreme close-ups require a dedicated macro lens. You should also look out for optical image stabilisation. This counteracts blur-inducing camera shake and is important for telephoto lenses where shakes are magnified.

These are some important points that I must share to you so that when you buy a camera, you can figure out which is the best fit for your choice.

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