
A single-lens reflex camera (SLR) is a camera that typically uses a mirror and prism system that permits the photographer to view through the lens and see exactly what will be captured. With twin lens reflex and rangefinder cameras, the viewed image could be significantly different from the final image. When the shutter button is pressed on most SLRs, the mirror flips out of the light path, allowing light to pass through to the light receptor and the image to be captured.

In camera design, a focal-plane shutter (FPS) is a type of photographic shutter that is positioned immediately in front of the focal plane of the camera, that is, right in front of the photographic film or image sensor.

Canon EOS is an autofocus single-lens reflex camera (SLR) and mirrorless camera series produced by Canon Inc. Introduced in 1987 with the Canon EOS 650, all EOS cameras used 35 mm film until October 1996 when the EOS IX was released using the new and short-lived APS film. In 2000, the D30 was announced, as the first digital SLR designed and produced entirely by Canon. Since 2005, all newly announced EOS cameras have used digital image sensors rather than film. The EOS line is still in production as Canon's current digital SLR (DSLR) range, and, with the 2012 introduction of the Canon EOS M, Canon's mirrorless interchangeable-lens camera (MILC) system. In 2018 the system was further extended with the introduction of the EOS R camera, Canon's first full frame mirrorless interchangeable lens system.

A digital single-lens reflex camera is a digital camera that combines the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor.

The Nikon FA was an advanced amateur-level, interchangeable lens, 35 mm film, single-lens reflex (SLR) camera. It was manufactured by the Japanese optics company Nippon Kogaku K. K. in Japan from 1983 to 1987. The FA used a titanium-bladed, vertical-travel Nikon-designed, Copal-made focal plane shutter with a speed range of 1 to 1/4000th second plus Bulb and flash X-sync of 1/250th second. It was available in two colors: black with chrome trim and all black. The introductory US list price for the chrome body only was $646. Note that SLRs usually sold for 30 to 40 percent below list price.

The Nikon FE2, interchangeable-lens, 35 mm film, single lens reflex (SLR) camera. It was manufactured by Nippon Kogaku K. K. in Japan from 1983 to 1987. The FE2 used a Nikon-designed vertical-travel focal-plane shutter with a speed range of 8 to 1/4000th second, plus Bulb and flash X-sync of 1/250th second. It has dimensions of 90 millimetres (3.5 in) height, 142.5 mm (5.61 in) width, 57.5 mm (2.26 in) depth and 550 grams (19 oz) weight, and was available in two colors: black with chrome trim and all black. The introductory US list price for the chrome body only was $446. Note that SLRs usually sold for 30 to 40 percent below list price.

The Nikon FE is an advanced semi-professional level, interchangeable lens, 35 mm film, single-lens reflex (SLR) camera. It was manufactured by Nikon in Japan from 1978 to 1983, and was available new from dealer stock until c. 1984. The FE uses a metal-bladed, vertical-travel focal plane shutter with a speed range of 8 to 1/1000 second, plus Bulb, and flash X-sync of 1/125th second. It had dimensions of 89.5 millimetres (3.52 in) height, 142 mm (5.6 in) width, 57.5 mm (2.26 in) depth and 590 grams (21 oz) weight. It was available in two colors: black with chrome trim and all black. As on the FM, its model designation did not appear on the front of the camera, but was engraved as a small "FE" preceding the serial number on the rear of the housing.

The Canon A-1 is an advanced level single-lens reflex (SLR) 35 mm film camera for use with interchangeable lenses. It was manufactured by Canon Camera K. K. in Japan from April 1978 to 1985. It employs a horizontal cloth-curtain focal-plane shutter with a speed range of 30 to 1/1000 second plus bulb and flash synchronization speed of 1/60 second. It has dimensions of 92 millimetres (3.6 in) height, 141 millimetres (5.6 in) width, 48 millimetres (1.9 in) depth and 620 grams (22 oz) weight. Unlike most SLRs of the time, it was available in only one color; all black. The introductory US list price for the body plus Canon FD 50 mm f/1.4 SSC lens was $625, the camera was generally sold with a 30–40% discount.

The Nikon FG is an interchangeable lens, 35 mm film, single-lens reflex (SLR) camera. It was manufactured by Nippon Kogaku K. K. in Japan from 1982 to 1986.

The Canon T90, introduced in 1986, was the top of the line in Canon's T series of 35 mm Single-lens reflex (SLR) cameras. It is the last professional-level manual-focus camera from Canon, and the last professional camera to use the Canon FD lens mount. Although it was overtaken by the autofocus revolution and Canon's new, incompatible EOS after only a year in production, the T90 pioneered many concepts seen in high-end Canon cameras up to the present day, particularly the user interface, industrial design, and the high level of automation.
The Olympus OM System was a line of 35mm single-lens reflex cameras, lenses and accessories sold by Olympus between 1972 and 2002.

The Olympus OM-2 is a single-lens reflex film system camera produced by Olympus of Japan.

The history of the single-lens reflex camera (SLR) begins with the use of a reflex mirror in a camera obscura described in 1676, but it took a long time for the design to succeed for photographic cameras: the first patent was granted in 1861, and the first cameras were produced in 1884 but while elegantly simple in concept, they were very complex in practice. One by one these complexities were overcome as optical and mechanical technology advanced, and in the 1960s the SLR camera became the preferred design for many high-end camera formats.

The Pentax LX is a 35 mm single-lens reflex camera produced by Pentax in Japan. It was introduced in 1980 and produced until 2001. The LX uses the K mount which is the Pentax proprietary bayonet lens mount. It has manual and aperture priority automatic exposure modes. It is the top-of-the-line "professional" or "system" camera in the Pentax manual focus range, and has a large range of accessories. Compared with contemporary professional camera bodies from rival manufacturers, like the Canon New F-1 or Nikon F3, the LX body is smaller and lighter, weighing in at 570 grams with standard FA-1 finder.

The Olympus OM-4 is an interchangeable-lens, 35 mm film, single lens reflex (SLR) camera; manufactured by Olympus Optical Co., Ltd. in Japan, and sold as OM-4 from 1983 to 1987 and as OM-4Ti from 1986 to 2002.

The Nikon FM10 is a manual focus 35 mm film camera sold by Nikon Corporation. It is of SLR design and was first available in 1995. It is normally sold in a kit that includes a Zoom Nikkor 35–70 mm f/3.5-4.8 zoom lens, although a Zoom Nikkor 70–210 mm f/4.5-5.6 zoom lens is also available. An electronic companion model known as the FE10 was also sold at one stage.

Live preview is a feature that allows a digital camera's display screen to be used as a viewfinder. This provides a means of previewing framing and other exposure before taking the photograph. In most such cameras, the preview is generated by means of continuously and directly projecting the image formed by the lens onto the main image sensor. This in turn feeds the electronic screen with the live preview image. The electronic screen can be either a liquid crystal display (LCD) or an electronic viewfinder (EVF).

The Pentax ME F was an amateur level, interchangeable lens, 35 mm film, single-lens reflex (SLR) camera. It was manufactured by Asahi Optical Co., Ltd. of Japan from November 1981 to 1984. The ME F was a heavily modified version of the Pentax ME-Super, and a member of the Pentax M-series family of SLRs. It was the first mass-produced SLR camera to with an autofocus system.
This article discusses the cameras – mainly 35 mm SLRs – manufactured by Pentax Ricoh Imaging Corp. and its predecessors, Pentax Corporation and Asahi Optical Co., Ltd..

The Canon EOS 500D is a 15-megapixel entry-level digital single-lens reflex camera, announced by Canon on 25 March 2009. It was released in May 2009. It is known as the EOS Kiss X3 in Japan, and as the EOS Rebel T1i in North America. It continues the Rebel line of mid-range DSLR cameras, is placed by Canon as the next model up from the EOS 450D, and has been superseded by the EOS 550D (T2i).