spotmeter![click to hear](/images/speaker.jpg)
Exposure meter that uses a viewfinder to measure the brightness of precise spots on the scene to be photographed.
eyepiece ![click to hear](/images/speaker.jpg)
Optical disk or system of disks through which the eye sees the image produced by the lens.
data display ![click to hear](/images/speaker.jpg)
Liquid crystal display showing camera readings and calculated exposure data.
shutter speed setting ![click to hear](/images/speaker.jpg)
Buttons that select the length of time a film is to be exposed to light (exposure time).
aperture/exposure value display ![click to hear](/images/speaker.jpg)
Button that displays data (diaphragm opening and exposure time) on suggested exposures based on the brightness of the scene.
memory recall key ![click to hear](/images/speaker.jpg)
Button that displays data stored in memory.
memory key ![click to hear](/images/speaker.jpg)
Button that stores data in memory.
film speed ![click to hear](/images/speaker.jpg)
Button that shows a film’s sensitivity to light as expressed by the ISO or ASA number, where the higher the number, the more sensitive the film.
memory cancel ![click to hear](/images/speaker.jpg)
Button that erases data stored in memory.
objective lens ![click to hear](/images/speaker.jpg)
Optical system formed of lenses attached to a mount that relay light to sensitive cells, which measure the light’s intensity.
lock switch ![click to hear](/images/speaker.jpg)
Device activating or blocking the measuring button.
shadow key ![click to hear](/images/speaker.jpg)
Key that determines the correct exposure when priority is given to the darkest areas in the scene.
highlight key ![click to hear](/images/speaker.jpg)
Key that determines the correct exposure when priority is given to the brightest areas in a scene.
average key ![click to hear](/images/speaker.jpg)
Key that determines the correct exposure based on the average brightness of a scene.