TTL metering prism

TTL Metering prism
Inside the older type of KIEV-60 TTL Metering prism. There seems to be at least two different types of light metering prisms suitable for Kiev-6C and Kiev-60 cameras.
http://www.eol.ee/~margus/kiev/meter.html

TTL metering with the Pentacon Six
The Pentacon Six System by TRA. How do I use the metering prism? Metering with the Pentacon Six TTL prism. There are two ways to meter with the Pentacon Six TTL prism:
http://www.pentaconsix.com/metering.htm

Prisms for Pentacon Six mount cameras
As an alternative to swinging this lever up, one can carry out stop-down metering with the Exakta 66 TTL prism (when the Exakta 66 bellows or extension tubes are mounted on the body) by pressing the ...
http://www.pentaconsix.com/Prisms.htm

Kiev 88 TTL
... the most versatile medium format camera in in photography today, providing a full-featured 6x6 single lens reflex camera with interchangeable 6x6 film backs, TTL metering prism finder ...
http://www.anya-of-odessa.com/kiev_88_ttl.htm

Kiev TTL-Prism f. Exakta 66
Kiev TTL-Metering Prism finder for Exakta 66 and Pentacon Six adapter protected by law. A cheap, good quality TTL-Prism for the Exakta 66 ! And finally a bright one for the Pentacon Six
http://www.baierfoto.de/exaktaprism.html

KIEVCAMERA:::
The waist-level finder and TTL metering prism finder are compatible with most Hasselblad cameras. Also available is an extension tube set for closeup and macro photography using your Kiev lenses.
http://www.kievcamera.com/razdel.php?razdel=7

KIEVCAMERA:::
Although included with a Kiev 60 kit, Kiev Camera also offers the Kiev 60 waist-level viewfinder and the Kiev 60 TTL metering prism finder separately, should you desire to purchase them.
http://www.kievcamera.com/ru/razdel.php?razdel=8

Nikon F - Wikipedia, the free encyclopedia
The first Photomic had an independent photocell, then Nikon introduced the Photomic T (superseded by the Photomic Tn), which featured through-the-lens TTL metering. The final metering prism for the ...
http://en.wikipedia.org/wiki/Nikon_F

Bronica Learning Center: TTL-OTF, Tamron, USA Commack NY
Indoors, however, using an AE prism on auto with TTL-OTF flash metering will often result in long exposure times which will cause ethereal or ghostly images followed by a subject, frozen by the ...
http://www.tamron.com/bronica/ttl.asp

Arax Photo | Accessories
Highest quality TTL/SPOT electronically-metered prism viefinder. This is a last and more accurate metering version made in ARSENAL factory (Kiev, Ukraine)
http://araxfoto.com/accessories/spot-prism/