pentaprism


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pentaprism

(ˈpɛntəˌprɪzəm)
n
(General Physics) a five-sided prism that deviates light from any direction through an angle of 90°, typically used in single-lens reflex cameras between lens and viewfinder to present the image the right way round
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The weather-sealed body is quite large to accommodate a pentaprism eyepiece with eye sensor, a full-fledged hand grip, a tiltable display and weather-sealed flaps for ports.
7 Iso: Minimum Iso-100, Maximum Iso- 12800, Extendible Iso 25600, 8 Focus: Auto Focus - Yes, Manual Focus- Yes, 9 Video Recording: Video Recording Mode- Full Hd, Video Resolution- 1920X1080, 10 Screen: Screen Type- Tft Lcd, Screen Size Diagonal - 3 Inches, Swivel- No, Display Resolution- 1040000Dots, 11 Other Technical Specifications: Viewfinder- Eye-Level Pentaprism, Image Processing Engine- Digic 5 , Digital Zoom-10X, Wifi- Yesl, Gps Tagging- Yes, Nfc- No, Image Format- Raw, Jpeg, Other, Other Image Format- Dcf, Video Format-Mov, Avi, Mpeg, Other, Other Video Format - H.
The team then designed a second scanning pentaprism test, to guard against errors in the first test.
The viewfinder is the same 100 per cent pentaprism that's found in the D4 and D800, but it does have a different eyepiece.
The Lumix G1 has done away with the traditional pentaprism for TTL (through the lens) viewing and replaced it with an electronic viewfinder, resulting in a much smaller body (and lenses) that can be easily carried in an overcoat pocket.
It uses a pentaprism single-lens- reflex (SLR) viewfinder and 1.
To measure the squareness of axes, a pentaprism is used to bend the autocollimator light beam accurately 90 deg.
Sitting next to the Nikon D3s, its higher than it in height but a little narrower in depth, with a noticeably smaller pentaprism bulge, which is obvious given the huge viewfinder that full frame cameras have.
In front of the shutter is a first-surface mirror that directs the image-forming light to a focusing screen, which you examine through the eyepiece via a pentaprism.
Nikon also retained the removable pentaprism on its flagship autofocus cameras, the F4 and the F5.