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Wikipedia ですべてを見てくださいFixed-focus lens - Wikipedia
A photographic lens for which the focus is not adjustable is called a fixed-focus lens or sometimes focus-free. The focus is set at the time of lens design, and remains fixed. It is usually set to the hyperfocal distance, so that the depth of field ranges all the way down from half that distance to infinity, which is acceptable … 詳細
In order to reach a minimal focal distance, the aperture and the focal length of the lens are reduced (a slow wide-angle lens), to make the hyperfocal distance small. This allows the 詳細
CC-BY-SA ライセンスに準拠した Wikipedia テキスト 固定焦点レンズ | 単焦点レンズ - Edmund Optics
固定焦点レンズは、単一画角を持つようにデザインされたイメージングレンズで、単焦点レンズとも呼ばれます。エドモンド・オプティクスは、一連のサイズ、反射防止コーティング、対 …
焦点距離と実視野の理解 | Edmund Optics
- The focal length of a lens is a fundamental parameter that describes how strongly it focuses or diverges light. A large focal length indicates that light is bent gradually while a short focal length indicates that the light is bent at sharp angles. In general, lenses with positive focal lengths converge light while lenses with negative focal length...
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単焦点レンズの使い方｜広角・望遠・標準それぞれのポイント ...
TS UC シリーズ 固定焦点レンズ 12mm - Edmund Optics
TECHSPEC UC Series Fixed Focal Length Lenses are ideal for smaller format camera sensors and long working distance applications. Shop now with Edmund Optics!
Prime lens - Wikipedia
In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in a combination lens
焦点距離とは？画角との関係など基礎知識を解説 ...
2023年10月31日 · デジタル一眼カメラでは撮像素子 (イメージセンサー)に入った光が電荷として蓄えられ、カラーフィルターを通して得られた色情報をもとに画像が出来上がります。. このセンサーには主に 「35mmフルサイズセンサー」と「APS-Cセンサー」の2種類 が ...
What are fixed focal length lenses? - Edmund Optics
Fixed focal length lenses, commonly also referred to as factory automation (FA) lenses, C-Mount lenses, or prime lenses, are imaging lens assemblies designed with a singular angular field of …
焦点距離 - Wikipedia
焦点距離 （しょうてんきょり、 英: focal length, ）は 主点 と 焦点 との距離である [1][2]。. 光学系に対して光軸に平行な光線が入射する場合を考える。. 光学系を出た後の光線を逆向きに延 …
What is focal length in photography? A guide for …
2024年2月2日 · There are two types of lenses: primes, which have a fixed focal length, and zooms, where the focal length is variable. Zooms are super-handy as you often only have to carry one lens around that will be capable of shooting lots of different subjects, from landscapes to portraits, so it’s great for travel.
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