Lens

When buying the lens, it is important to think about whether you will be zooming or not. Zoom lenses for digital cameras provide images that are quite unconvincing very much like their 35 mm film coequals. Fixed lenses are often the right option for higher quality images. These Fixed lenses are only offered in lower resolution models such as the ones with 1.3 MP or 2MP and offer much higher quality than their zoom variants. These fixed lens models are the best options you can consider for your personal digital camera needs.

Digital Cameras have comparatively much smaller image area than a 35 mm negative. This makes it possible for them to achieve the same magnification as 35 mm counterparts by using a comparatively short focal length. More often lenses in the single digits are seen on the wide end; however, the 35 mm equivalent focal length is given, so a 35 to 70mm zoom lens will act the same as the 35mm lens.

These short focal lengths have two major drawbacks. One is that, it is very difficult to make a really wide lens. The widest that is possible on an expensive “prosumer” model is a 37 mm focal length equivalent to 35mm film. The second major drawback is the large depth of field. Although the depth of field of 35 mm is the same, note that you have a 7 mm lens. So even at f 2.8 all the objects in the frame are in focus creating disagreeable images. F2.8 refers to the amount of light a lens lets in; 2.8 is the lowest in scale and the value increases only with the increase in focal length of a zoom.

Lower values of this number mean better lens; the lens let in more light and results in reduced use of flash and less noise in the image. These images also offer better contrast and do not cause much flare.