Widescreen technology presentation

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Widescreen technology presentation

Posted On : Nov-19-2011 | seen (196) times | Article Word Count : 707 |

The widescreen format is a format for the 35-mm movie film and comes from the 1950s..

It refers to all image formats that are wider than the normal image or Academy ratio is (1.33:1 or 1.37:1). The most common widescreen formats are non- anamorphic formats European widescreen format (1.66:1) and widescreen American (1.85:1) and anamorphic formats like Panavision or Cinemascope (2.35:1) [1] . In the TV area in addition there is the 16:9 format (1.78:1). Although rare, there are also anamorphic 16mm film prints .

Non-anamorphic widescreen

Movies for this format are recorded in standard format and using the projection mask and lamination demonstrated in the 1.66 or 1.85:1 format. Since about 1970 the majority of the films is designed for wide-screen presentation. In many but not all copies of the film are the parts of the picture at the top and bottom, which should not be shown, covered in black. Not infrequently, one recognizes the wide-screen projection-designed, but either mistakenly or in normal format instead of 1.85:1 in 1.66:1 movies remarkably often been led microphones or lights visible on the top and bottom. On many boxes of film prints can still be found the inscription Flat - this means a film that is intended for non-anamorphic presentation.

Anamorphic widescreen

In order to fit on a conventional film negative at 4:3 aspect ratio, widescreen must be narrowed using special camera lenses in the horizontal axis. Since the vertical axis is mapped normally, but the horizontal is compressed, there is a deliberate photographic uneven change. Therefore, the optics of this technique anamorphic called (ana = up to; morpha = form). The first lenses for wide-screen format of this kind were by U.S. camera maker Panavision developed, not sold, only leased. They offered the advantage of the use of film negative being complete, but needed more light than conventional lenses. To the side crushed 35-mm film negatives or positives to convert back into a natural picture aspect ratio of 1:2.35, the cinema projectors must also be equipped with an anamorphic lens.

A special feature in the production presented the Superscope format dar. The films were shot with non-anamorphic recording technique in normal format (1.33:1), but was later performed in the laboratory an anamorphic format transferral to 2.0:1. In the cinema a Super Scope like a film Cinemascope or Panavision film with anamorphic attachment was projected. At the top and bottom of the screen image information was thus lost, but - as with the European and American wide screen format -. Was already taken into account when rotating the image composition were examples of Vera Cruz and the Body Snatchers .

Lower aspect ratio in the broad sense is defined as the ratio of at least two different lengths of sides of a polygon . Mostly so the ratio is given by the width of a rectangle of a screen or a screen to its height. A square has a 1:1 aspect ratio, because the two sides are equal. In the video section is also called the aspect ratio .

The specification of the aspect ratio screens often takes place at a fraction (eg 16:9 ), this fraction is often normalized to one and rounded, if necessary (eg 1.78:1).

For analog negatives, slides and paper images usually does the 3:2 format (negative size: 36 × 24 mm, so-called small picture format - as well as the 6x9 cm medium format ) are used. Also, most digital SLR cameras (DSLR) take on in this format, both so-called FX ("full frame"), as well as DX and APS-C cameras. APS-H cameras and most digital compact cameras use contrast, today the 4:3 - the same format used by most professional medium-format cameras in the 6x4 format, 5 cm. In the professional medium format and large format photography are also the formats 1:1 (6x6 cm), 1:1,17 (6x7 cm), 1:1.25 (4x5 inch and 8x10 inch), 1:1.4 ( 5x7 inches), 1:1,27 (11x14 inches) to 1:2.5 (4x10 inch) are common.

Occasionally there are digital cameras that are supposed to take in 4:3 format, but the aspect ratio is not entirely accurate. Thus, a 2 - megapixel photo with a Kodak EasyShare CX7220 format 1632 × 1232 pixels , 1632 x 1224 would be correct, but this conflicts with the use JPEG compression would result.

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<h1>Widescreen technology presentation</h1> Author: <a href='http://www.articleseen.com/profile_heena11.aspx'>heena11</a> It refers to all image formats that are wider than the normal image or Academy ratio is (1.33:1 or 1.37:1). The most common widescreen formats are non- anamorphic formats European widescreen format (1.66:1) and widescreen American (1.85:1) and anamorphic formats like Panavision or Cinemascope (2.35:1) [1] . In the TV area in addition there is the 16:9 format (1.78:1). Although rare, there are also anamorphic 16mm film prints .

Non-anamorphic widescreen

Movies for this format are recorded in standard format and using the projection mask and lamination demonstrated in the 1.66 or 1.85:1 format. Since about 1970 the majority of the films is designed for wide-screen presentation. In many but not all copies of the film are the parts of the picture at the top and bottom, which should not be shown, covered in black. Not infrequently, one recognizes the wide-screen projection-designed, but either mistakenly or in normal format instead of 1.85:1 in 1.66:1 movies remarkably often been led microphones or lights visible on the top and bottom. On many boxes of film prints can still be found the inscription Flat - this means a film that is intended for non-anamorphic presentation.

Anamorphic widescreen

In order to fit on a conventional film negative at 4:3 aspect ratio, widescreen must be narrowed using special camera lenses in the horizontal axis. Since the vertical axis is mapped normally, but the horizontal is compressed, there is a deliberate photographic uneven change. Therefore, the optics of this technique anamorphic called (ana = up to; morpha = form). The first lenses for wide-screen format of this kind were by U.S. camera maker Panavision developed, not sold, only leased. They offered the advantage of the use of film negative being complete, but needed more light than conventional lenses. To the side crushed 35-mm film negatives or positives to convert back into a natural picture aspect ratio of 1:2.35, the cinema projectors must also be equipped with an anamorphic lens.

A special feature in the production presented the Superscope format dar. The films were shot with non-anamorphic recording technique in normal format (1.33:1), but was later performed in the laboratory an anamorphic format transferral to 2.0:1. In the cinema a Super Scope like a film Cinemascope or Panavision film with anamorphic attachment was projected. At the top and bottom of the screen image information was thus lost, but - as with the European and American wide screen format -. Was already taken into account when rotating the image composition were examples of Vera Cruz and the Body Snatchers .

Lower aspect ratio in the broad sense is defined as the ratio of at least two different lengths of sides of a polygon . Mostly so the ratio is given by the width of a rectangle of a screen or a screen to its height. A square has a 1:1 aspect ratio, because the two sides are equal. In the video section is also called the aspect ratio .

The specification of the aspect ratio screens often takes place at a fraction (eg 16:9 ), this fraction is often normalized to one and rounded, if necessary (eg 1.78:1).

For analog negatives, slides and paper images usually does the 3:2 format (negative size: 36 × 24 mm, so-called small picture format - as well as the 6x9 cm medium format ) are used. Also, most digital SLR cameras (DSLR) take on in this format, both so-called FX ("full frame"), as well as DX and APS-C cameras. APS-H cameras and most digital compact cameras use contrast, today the 4:3 - the same format used by most professional medium-format cameras in the 6x4 format, 5 cm. In the professional medium format and large format photography are also the formats 1:1 (6x6 cm), 1:1,17 (6x7 cm), 1:1.25 (4x5 inch and 8x10 inch), 1:1.4 ( 5x7 inches), 1:1,27 (11x14 inches) to 1:2.5 (4x10 inch) are common.

Occasionally there are digital cameras that are supposed to take in 4:3 format, but the aspect ratio is not entirely accurate. Thus, a 2 - megapixel photo with a Kodak EasyShare CX7220 format 1632 × 1232 pixels , 1632 x 1224 would be correct, but this conflicts with the use JPEG compression would result.
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