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In photography, through-the-lens metering (TTL metering) refers to a feature of cameras whereby the intensity of light reflected from the scene is measured...

and ESII were capable of open-aperture metering when used with Super Multi Coated (S-M-C) Takumar lenses with an aperture coupling prong in the lens...

to the metering circuit, allowing for automated shutter speed selection by the camera (aperture priority). M42 cameras with wide open metering facility...

101 besides the open aperture metering at the time of its release to the public at Photokina in 1966 was the so called "CLC"-metering characteristic....

aperture for composition and focusing; this feature became known as open-aperture metering. For some lenses, including a few long telephotos, lenses mounted...

provide open aperture metering; only stop down metering. Nikon's most recent 35 mm film SLR lenses, the AF Nikkor G type (2000) lacking an aperture control...

open aperture. It (and rival TTL metering SLRs, including the Canon FT [1966; stop-down aperture, partial area], Minolta SRT101 [1966; open aperture,...

'Permitted' and use stop-down metering mode (Pentax calls it optical preview) to ensure proper exposure. KA and KAF lenses with aperture rings are fully compatible...

The Five-hundred-meter Aperture Spherical Telescope (FAST; Chinese: 五百米口径球面射电望远镜), nicknamed Tianyan (天眼, lit. "Sky's/Heaven's Eye"), is a radio telescope...

the T70 also supported selective area metering, which metered only the center 11% of the frame. The metering mode was selected by a sliding switch on...

moved with the aperture selected. When used with a camera body which could read the lug, this enabled the use of open-aperture metering. Examples of such...

HDTV (cropped)) TAv exposure mode: Time/Aperture Value: photographer sets his own desired shutter speed/aperture, while the camera adjusts the ISO accordingly...

introduction of the Spotmatic F (now incorporating open-aperture metering rather than the stop-down metering of the early models). However, by the mid-1970s...

There are two main types of rear iron sight: open sights, which use an unenclosed notch, and aperture sights, which use a circular hole. Nearly all handguns...

SL35, the Rolleiflex SL350 had open-aperture metering; the earlier Rolleiflex SL35 was built with a stop down light meter, which required the photographer...

the SL350, the successor to the SL35. Despite state-of-the-art open-aperture metering, which was promoted with the catch-phrase "concentration on the...

some third-party products) do not support open-aperture metering on these bodies. Instead, stop-down metering must be carried out by pushing the “green...

communication with the normally mounted lens, for features such as open-aperture metering. The magnification ratio is calculated by dividing the focal length...

(with the exception of Nikon F mount), usually losing open-aperture-metering, multi-segment metering, focus confirmation, automatic flash zoom capabilities...

the Live View system, wireless flash capability, and a claimed improved metering system. Media related to Olympus E-510 at Wikimedia Commons Press release...