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A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
A Siemens chart filter in a collimator, used for auto-focus calibration of digital still cameras. In the field of video production, where it is often called a back focus chart, the Siemens star is widely used to adjust the back focus of removable lenses. It is also used during film or video shoots to help setting the focus in special situations.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... Camera examples 32 32 1:1. 1024
The RMA 1946 Resolution Chart was transmitted by NTS and NOS in the Netherlands, SRG SSR in Switzerland, [18] VRT and RTBF in Belgium, RTP in Portugal, TVP in Poland, TVB in Hong Kong, [citation needed] Venevisión in Venezuela (525-lines variant; in conjunction with Indian-head test pattern), [citation needed] WISN-TV in Milwaukee, Wisconsin (525-lines variant) [19] and on low-powered ...
With "High Speed" label and with focus-stop buttons; white finish Zoom lenses: Wide-angle and special purpose zoom lenses: 3×–1× f /1.7–2.8: Minolta AF Macro Zoom 3×-1× f / 1.7-2.8: 2594-116, 2594-616 25941 [18] 5-pin 46mm No No No 1990 3:1 max.; white finish; also available as calibrated version in conjunction with Minolta CS-1000S ...
The Mamiya RZ67 is a professional medium format single-lens reflex camera manufactured by Mamiya.There are three successive models: the RZ67 Professional (released in 1982), RZ67 Professional II (released in 1993) and RZ67 Professional IID (released in 2004).
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The focus itself may be adjusted in a variety of ways. Larger view cameras and the like slide the lens closer or further from the film plane on rails; on smaller cameras, a focus ring on the lens is often rotated to move the lens elements by means of a helical screw. Other systems include levers on the lens or on the camera body.