SLR Cameras

Before the development of SLR, all cameras with viewfinders are two optical light paths: one path through the lens to film, and other road is placed on top (TLR or twin-lens reflex) or edge (Scout). Since the viewfinder and the lens can not share the movie with the same optical path, this lens is aimed to see the movie to converge on the lens at a fixed point in an area in front of the camera. This is no problem for the pictures taken at medium range or more, but causes parallax error-frame close-ups. In addition, the focus lens reflex camera quickly when a wider hole (as in low light or when using low-speed film) is not easy.

The single-lens reflex (SLR) camera is a camera that usually use a semi-automatic moving mirror (hence the name "shadow", the reflection mirror) that allows the photographer to see what is captured by film or digital imaging system, as opposed to pre-SLR cameras where the view through the viewfinder could be significantly different than what was captured on film.

Most SLR cameras allow upright and right lateral view by using the roof pentaprism situated in the optical path between the reflex mirror and viewfinder. Light, which comes either horizontally or vertically inverted after passing through a lens, is reflected upward by mirror reflex, the pentaprism which reflected many times to improve the inversion caused by the lens, and align the image in the viewfinder. When the shutter is released, the mirror moves out of the way of light, and light shines directly onto film (or in case of a DSLR, CCD or CMOS imaging sensor). Canon Camera Pellix is ​​exceptional for a moving mirror system, which mirror is a thin skin beamsplitting well.

Focus can be adjusted manually by the photographer or automatically by the autofocus system. The viewfinder may include matte focusing screen that is located just above the mirror systems to spread the light. It enables accurate estimation, developing and focusing, especially useful with interchangeable lenses.

Until the 1990s, the SLR is the most advanced system available to preview pictures, but the development and refinement of digital imaging technology and a screen-camera live preview LCD is overshadowed by popularity of SLR. Almost all compact digital cameras are cheap now includes an LCD screen that lets photographers preview to see what CCD is captured. However, SLR is still popular in high-end cameras and professional because they have a camera system with interchangeable parts, allowing customization. They also have a shutter lag is less, allowing images to be more timely. Also pixel resolution, contrast ratio, refresh rate, and color gamut LCD preview screen can not compete with light and shadow detail SLR viewfinder optics directly viewed.

Title Post: SLR Cameras
Rating: 100% based on 2069 ratings. 5 user reviews.
Author: the Wicaksonos Family

Thank you for visiting DiGiView - DIGITAL CAMERA REVIEW