User:Hourio

<!-- アリフレックス D-20はフィルム型のデジタルシネマ用カメラでアーノルド&リヒター社が2005年11月に販売を始めた. このカメラは光学式ファインダー、35mmフィルム幅の単板式のCMOSイメージセンサを備える.

概要
D-20はスーパー 35と同じ幅の単板式CMOSイメージセンサを用いる. 従来の35mmPL マウントのレンズを使用できる為、画角と被写界深度は従来の35mmフィルム式映画用カメラと同等である.

D-20は2つのモードで撮影する.

データモードでは2880x2160の有効画素でRAWデータをカラー12ビット縦横比4：3で録画する.

HDモードでは撮像素子2880x1620の有効画素が使用され縦横比は16:9で1920x1080画素YUV 4:2:2、10ビットまたはRGB 4:4:4、10ビットにダウンサンプルできる. 通常はソニーのHDCamSR同様に有線である. 他の記録オプションではRGB 4:4:4で最大15分記録する無線式のグラスバレー社のフラッシュマグがある.

以下に可能な記録フォーマットを示す. :

データモード: - 2880 x 2160 RAW 12 bit ベイヤーデータ @ 23.976p, 24p, 25p - 2880 x 1620 RAW 12 bit ベイヤーデータ @ 29.97p, 30p

HD モード – HD-SDI (SMPTE 292M): - 1920 x 1080 4:2:2 YCbCr 10 bit @ 23.976, 24, 25, 29.97, 30 PsF

HD モード – dual link HD-SDI (SMPTE 372M): - 1920 x 1080 4:4:4 RGB 10 bit @ 23.976, 24, 25, 29.97, 30 PsF - 1920 x 1080 4:2:2 YCbCr 10 bit @ 48, 50, 59.94, 60PsF*

D-20は機械式シャッターで11.2°から180°若しくは電気式シャッターで機械式シャッターで毎秒24フレーム時に270°相当まで再現することができる. カメラの送り速度は毎秒1から60フレームまで可能である. 従来のアリフレックス 435等に使用されていたコンポーネントや付属品を使用できる.

RAWデータモードでは送り速度は23.976 frame/s、 24 frame/s, 25 frame/s, 29.97 frame/s & 30 frame/s に限られる.

ビデオモードでの撮影感度はISO 100 から ISO 800まで連続的に感度が設定できる. D-20は銀塩フィルムの感度を再現する為に感度を対数曲線に設定する事も可能である. 他のデジタルカメラと異なりD-20には増感が装備されていない. 処理の過程で増感を行う.

競合機
他の単板式スーパー35フィルムサイズの映画用カメラで競合するのはパナビジョン社のジェネシスカメラやダルサ社のダルサ オリジンカメラやレッド社のレッドワン等がある.

外部リンク

 * Official site
 * More detailed information can be found on the D-20 page in the Movie Making Manual WikiBook.
 * Eric Fletcher's (SOC) |user experience with the D-20.
 * Indie filmmaker reviews Arriflex D-20
 * CSC News Article Arriflex D20
 * Anthem VFX works with footage from Arriflex D20 on the Mini Series "Tin Man" Studio Daily
 * The Arriflex D20 officially landed in South Africa, rental only (04 Feb 2008) Media Film Service

en::Arriflex D-20 Arriflex D-20

レンズマウントの一覧
この レンズマウントの一覧 はフランジフォーカル距離の短いものから長い順番に並べられている. デジタル用、スイル用、映画用を含む

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 * For the police officer see Harry Edgerton

Harold Eugene "Doc" Edgerton (April 6, 1903 – January 4, 1990) was a professor of electrical engineering at the Massachusetts Institute of Technology. He is largely credited with transforming the stroboscope from an obscure laboratory instrument into a common device. For example; today, the electronic flash is completely associated with the field of photography.

Early years
He was born in Fremont, Nebraska on April 6th, 1903, the son of Frank Eugene Edgerton, a descendent of Governor William Bradford (1590-1657) of the Plymouth Colony and a passenger on the Mayflower and Mary Nettie Coe. He grew up in Aurora, Nebraska and attended the University of Nebraska-Lincoln where he became a member of Acacia Fraternity. After graduating, he married Esther Garret in 1928. During their marriage they had three children: William, Robert, and Mary Lou.

Education
He earned an S.M. in electrical engineering from MIT in 1927. Edgerton used stroboscopes to study synchronous motors for his Sc.D. thesis in electrical engineering at MIT, awarded in 1931. He credited Charles Stark Draper with inspiring him to point stroboscopes at everyday objects: the first was a stream of water coming out of a faucet.

In 1937 he began a lifelong association with photographer Gjon Mili, who used stroboscopic equipment, particularly a "multiflash" strobe light, to produce strikingly beautiful photographs, many of which appeared in Life Magazine. This strobe light could flash up to 1 million times a second. Edgerton was a pioneer in strobe photography, subsequently using the technique to capture images of balloons during their bursting, or a bullet during its impact with an apple, for example. He was awarded a bronze medal by the Royal Photographic Society in 1934, and the National Medal of Science in 1973.

He was a cofounder of the company EG&G, with Kenneth Germeshausen and Herbert Grier, in 1947. EG&G became a prime contractor for the Atomic Energy Commission and had a major role in photographing and recording nuclear tests for the United States through the fifties and sixties. For this role he developed the Rapatronic camera, which was supplied by EG&G.

His work was instrumental in the development of side-scan sonar technology, used to scan the sea floor for wrecks. Edgerton worked with the undersea explorer Jacques Cousteau, by first providing him with underwater stroboscopes, and then by using sonar to discover the Britannic. Edgerton participated in the discovery of the American Civil War battleship USS Monitor. While working with Cousteau, he acquired the nickname he is still known by in photographic circles, "Papa Flash".

In addition to having the scientific and engineering acumen to perfect strobe lighting commercially, Edgerton is equally recognized for his visual aesthetic: many of the striking images he created in illuminating phenomena that occurred too fast for the naked eye adorn art museums worldwide.

He was especially loved by MIT students for his willingness to teach and his kindness: "The trick to education," he said, "is to teach people in such a way that they don't realize they're learning until it's too late." His last undergraduate class, taught during fall semester 1977, was a freshman seminar titled "Bird and Insect Photography." One of the graduate student dormitories at MIT carries his name.

Edgerton's work was featured in an October 1987 National Geographic Magazine article entitled, "Doc Edgerton: the man who made time stand still."

Death
He died January 4, 1990 at the age of 86.

Legacy
On July 3, 1990, in an effort to memorialize his accomplishments, several Aurora community members decided to construct a "Hands-On" science center. It was designated as a "teaching museum," that would preserve Doc's work and artifacts, as well as feature the "Explorit Zone" where people of all ages could participate in hands-on exhibits and interact with live science demonstrations. After five years of private and community-wide funding, as well as individual investments by Doc's surviving family members, the Edgerton Explorit Center was officially dedicated on September 9, 1995.