大家有冇用dynamic range 啊~~~~~

用途大唔大呢?

你知道dynamic range是甚麼嗎?

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冇dynamic range

得0同1,得黑白仲要無灰階?

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點用架?...

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原帖由 initials 於 2008-12-26 01:06 發表
點用架?...

唔識

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好LA... 我地唔好笑人la...

樓主你係唔係想講HDR 呀?

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原帖由 hongdogdog 於 2008-12-26 00:52 發表
用途大唔大呢?


以前冇部機冇得set, 依家就set Low, 咁算唔算有用?

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真係唔識....有無大大講解下呢?

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http://en.wikipedia.org/wiki/Dynamic_range

Photography

Photographers use "dynamic range" for the luminance range of a scene being photographed; or the limits of luminance range that a given digital camera or film can capture; or the opacity range of developed film images; or the reflectance range of images on photographic papers.

Graduated neutral density filters are used to increase the dynamic range of scene luminance that can be captured on photographic film (or on the image sensor of a digital camera). The filter is positioned in front of the lens at the time the exposure is made; the top half is dark and the bottom half is clear. The dark area is placed over a scene's high-intensity region; usually the sky. The result is more even exposure in the focal plane, with increased detail in the shadows and low-light areas. Though this doesn't increase the fixed dynamic range available at the film or sensor, it stretches usable dynamic range in practice.

In the domain of digital imaging, algorithms have been developed to map the image differently in shadow and in highlight to better distribute the lighting range across the image. These techniques are known as high dynamic range imaging.

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DR已經由一個concept 變咗做一個function,
基本上好多人都會enable 佢嘅。

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