焦距 - 維基百科，自由的百科全書 焦距 ，也稱為 焦長 ，是 光學 系統中衡量光的聚集或發散的度量方式，指從 透鏡中心 到光聚集之 焦點 的距離。亦是 照相機 中，從鏡片光學中心到 底片 、 CCD 或 CMOS 等成像平面的距離。具有短焦距的光學系統比長焦距的光學系統有更佳聚集光的能力 ...
Lens (optics) - Wikipedia, the free encyclopedia of the visible and infrared light incident on the lens is concentrated into the small image. A large lens will create enough intensity to burn a flammable object at the focal point. Since ignition can be achieved even ...
Understanding Camera Lenses - Cambridge in Colour - Photography Tutorials & Learning Community UNDERSTANDING CAMERA LENSES Understanding camera lenses can help add more creative control to digital photography. Choosing the right lens for the task can become a complex trade-off between cost, size, weight, lens speed and image quality.
Focal length - Wikipedia, the free encyclopedia The focal length of an optical system is a measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A ...
Lens Focal Length Lens Focal Length Chart Taking the nature photographs like those in my books about Rocky Mountain National Park, Wildflowers and Wildlife require an assortment of lenses depending on the subject. Typically normal to wide angle lenses are used for landscap
Olympus Microscopy Resource Center | Tube Lens Focal Length - Java Tutorial This interactive Java tutorial explores the effect of tube lens focal length on the angle of off-axis light rays in microscopes with infinity-corrected optical systems. ... Tube Lens Focal Length As the focal length of the tube lens is increased, the dist
Lens Focal Length - 相關圖片搜尋結果
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