- SLR:
A single-lens reflex (SLR) camera is a camera that typically uses a semi-automatic moving mirror system that permits the photographer to see exactly what will be captured by the film or digital imaging system (after a very small delay), as opposed to pre-SLR cameras where the view through the viewfinder could be significantly different from what was captured on film.
- TLR:
A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length.
- Lens:
A camera lens (also known as photographic lens, objective lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.
- Shutter:
A shutter is a device that allows light to pass for a determined period of time, for the purpose of exposing photographic film or a light-sensitive electronic sensor to light to capture a permanent image of a scene.
- Shutter speed control:
The aperture diaphragm of a lens (bigger or smaller values) AND timing (open and close) of the camera's shutter curtain - BOTH perform the tasks of regulating the amount of light entering the camera and expose onto the film.
- Aperture:
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are, which is of great importance for the appearance at the image plane.
- ASA :
The ASA stands for American Standards Assoc. It is also the older film speed rating.
- ASA Dial:
- Shutter Button:
In photography the shutter-release button (sometimes just shutter release or shutter button) is a button found on many cameras, used to take a picture. When pressed, the shutter of the camera is "released", so that it opens to capture a picture, and then closes, allowing an exposure time as determined by the shutter speed setting (which may be automatic).
- Rewind Knob:
This is usually rest around the pentaprism of the camera (but some were designed around the film rewind knob). It has an electrical contact which mated with a contact in the mounting foot of the flash unit.
