Revisiting some camera basics
Everybody should have one or more of hobbies that can help you relax and take your mind away from work. Speaking for myself, when I am not working on investment education and other topics such as a getresponse review, I turn to music and food and, more recently, photography. I have recently in revisiting my camera basics and thought that I would share these basics with you.
Traditional cameras work by capturing light on a photographic plate or photographic film. Digital still and video cameras use electronic devices such as charge coupled devices (CCD) or a CMOS sensor which can be stored on a memory card inside the camera all subsequent playback or processing. Many modern digital cameras that are available can switch between video and still mode.
The lens of a camera captures the light for the photograph and focuses it on the photographic film or the electronic device. Therefore the manufacture and design of lenses is absolutely critical to the quality of the picture. You can find lenses in a large variety of focal lengths and choose between wide angle, standard and telephoto lenses. Each lens is appropriate for a particular kind of picture. For instance, if you were photographing a historic building, a wide angle lens will provide you with width. On the other hand, the telephoto lens will provide you with a close up view of a relatively faraway object and is suitable for sports photography.
Because of the inherent properties of lenses, only objects within a certain distance from the lens will provide always results. Focus is the process of adjusting this distance so that you can always get a clear picture regardless of distance. Cheap cameras tend to have fixed focus whereas more expensive cameras will permit you to adjust the focus automatically or manually. Rangefinder cameras allow you to measure the distance to the object and thereby obtain greater clarity.