A single-lens reflex camera (SLR) is a camera that typically uses a mirror and prism system (hence “reflex” from the mirror’s reflection) that permits the photographer to view through the lens and see exactly what will be captured. With twin lens reflexA Twin Lens Reflex camera uses two lenses, one for composing the picture, and one for taking the picture. The two lenses are close together so that although the viewfinder is separate, it sees a field of view nearly identical to that of the taking lens. More and rangefinderA rangefinder is a focus mechanism that allows the user to calculate the distance of a subject through the convergence of two images. Cameras that use this mechanism are usually referred to as ‘rangefinders’. Rangefinder cameras were very popular in the 1950s, 60s and 70s. Single Lens Reflex (SLRs) and compact cameras largely replaced them in the 70s, 80s and 90s. What is not always appreciated is that rangefinders offer several tangible benefits over SLRs, not least in image quality. Indeed, many photographers would rate the Leica M Digital Rangefinder as one of the best cameras available today. More cameras, the viewed image could be significantly different from the final image. When the shutter buttonEither mechanical and/or electronic shutters are possible. Mechanical systems can use a leaf (or iris) shutter or curtain shutter. In digital cameras a third alternative is also possible: the electronic shutter. This works by activating and then deactivating the CCD so that no further light can be recorded, regardless of whether light is hitting the CCD. The shutter controls the exposure time, which can range from thousandths of a second to several minutes or more. Fast shutter speeds freeze action, slow speeds are more suited to stationary subjects. A tripod is recommended for slow exposure shots to avoid camera shake, or IBIS. More is pressed on most SLRs, the mirror flips out of the light path, allowing light to pass through to the film.
Other camera typoes include DSLRA digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that combines the optics and the mechanisms of a single-lens reflex (SLR) camera with a digital imaging sensor. The reflex design scheme is the primary difference between a DSLR and other digital cameras. In the reflex design, light travels through the lens and then to a mirror that alternates to send the image to either the viewfinder or the image sensor. The viewfinder of a DSLR presents an image that will not differ substantially from what is captured by the camera's sensor but presents it as a direct optical view through the lens, rather than being captured by the camera's image sensor and displayed by a digital screen. DSLR is often (wrongly) used to describe cameras that are Micro Four Thirds or Bridge Camera - just because they look similar. This can bee seen when cameras are offered for sale. [rdp-wiki-embed url="http://camera-wiki.org/wiki/DSLR" toc_show='0′ edit_show='0′ infobox_show='1′] More, RangefinderA rangefinder is a focus mechanism that allows the user to calculate the distance of a subject through the convergence of two images. Cameras that use this mechanism are usually referred to as ‘rangefinders’. Rangefinder cameras were very popular in the 1950s, 60s and 70s. Single Lens Reflex (SLRs) and compact cameras largely replaced them in the 70s, 80s and 90s. What is not always appreciated is that rangefinders offer several tangible benefits over SLRs, not least in image quality. Indeed, many photographers would rate the Leica M Digital Rangefinder as one of the best cameras available today. More and Compact.
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