Posts Tagged ‘Nikon D40’

Factors to consider when buying a camera lens

October 11th, 2009

When buying a camera lens, there are factors to consider to ensure the production of better quality shots even in low light conditions.
The purchase of a DSLR or Digital Single Lens Reflex comes with a basic kit lens that can provide images of decent quality. But the advantage in DSLR cameras is the ability to change lenses depending on the type of image you want. There are powerful zoom lenses or macro lenses, for example.
Here are some factors to consider when buying a digital camera lens:
Glass
? The focal length – is the real distance between the center lane of the lens and the back element, measured in millimeters (mm). This is where the light enters the lens parallel rays converge at a point. Determines the viewing angle of the lens. When there is a smaller focal length, field of view widens, providing the most memorable scenes for her camera to capture. When you increase the focal length, the actual field of view becomes narrower.
? Aperture – This is one of the mechanisms of control that the real "quantity of light" that passes through the lens of image sensors. Also known as "f-stop", as f/2/8. The lower the number, the greater openness. This means more light enters the camera. Since he started collecting the additional light, a type of lens that can open to greater openness can also have a higher shutter speed. This feature is essential in low light conditions for sharp images, especially through a handheld camera.
? Image Stabilization – the slower shutter speed may be to blur when the cameras are on hand. Image stabilization compensates for the tremors, allowing handheld shooting several shots in the midst of low light conditions. Deadline for this is Canon IS (Image Stabilization). Nikon uses the term VR (Vibration Reduction).
Zoom included in a series of digital SLR kit offers focal lengths ranging from 18 to 35 mm. Depending on the capacity for growth of the camera, which can reach up to 55 mm. This means that you can spend only a moderate wide angle "view of the telephoto lens" light ".
If you plan to expand the functions of the digital camera, here are some things you should consider:
? PRIME LENSES – These should have a higher rate of zoom or 35 mm focal length between 85 mm up lonely. Prime lenses have a glass better than them.
If you get the "fixed-length lens, there is a trend that will have to go to get his shot. Of course, for some time, and this will help you better compositions.
Prime lenses also have a higher rate of maximum aperture, making it easier to achieve greater clarity, especially in equipment in low light.
? Tele – For those who wish to obtain photographs of action, it would be the best paintings, ranging from 100mm to 300mm. This is due to crop factor DSLR. There is not much need to approach. A good example is the Nikon D40, which has a type of 200 millimeters telephoto lens that can become a 300 mm one.