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A digital single-lens reflex camera (DSLR) is a digital camera which makes use of a digital imaging sensor and integrates the mechanisms of a traditional single-lens reflex camera and optics. Digital single-lens reflex cameras are highly popular and have replaced many film-based single-lens reflex cameras. They are mostly used for capturing high-quality images.
Similar to traditional single-lens reflex cameras, a digital single-lens reflex camera makes use of interchangeable lenses and manipulation of light. When light bounces off the object, the light passes through a small opening in the camera, creating an image on the other side of this opening. With the help of the lens, images can be brought into focus. The image is then captured with the digital sensor, which is made up of millions of photosites which are sensitive to light. The image captured on the digital sensor is transferred to a processor, which in turn creates the final image available for the display.
There are many benefits associated with digital single-lens reflex cameras. Since there is no shutter mechanism in these cameras, pictures can be taken instantly. Therefore, a digital single-lens reflex camera is best suited for capturing for quick snaps/moments. Zooming could take time in other cameras; however, in the case of a digital single-lens reflex camera, the user can manually control the zoom and its speed. One of the biggest advantages associated with digital single-lens reflex cameras is their ability to capture high-quality pictures even in low light conditions without the need for a flash component. Since DSLR cameras do not use film, the cost per shot is very low.
Due to the larger size of the camera sensor, DSLRs can provide better image quality than point-and-shoot cameras. Complete isolation of the foreground from background or getting a shallow depth of field is possible with DSLRs. Unlike point-and-shoot cameras, DSLRs are upgradable and there are many external accessories available. One of the biggest benefits associated with DSLRs is the greater control over the process of picture taking: the pace of photo taking as well as wide angles are possible. DSLRs also have good capabilities for night photography, which is limited for point-and-shoot cameras.