You get the same amount of light with a large aperture and a fast shutter speed as you do with a small aperture and a slow shutter speed.

你使用大光圈以及慢速快门所得到的光和你使用小光圈以及高速快门得到的光是一样多的。

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Portrait mode chooses a large aperture (a small 'f' number) which will make the depth of field (the amount of your shot in focus) smaller.

人像模式用一个大光圈(f值小)，而让景深(清晰对焦的那部分)变小。

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In fact, using digital cameras provide default mode, phase opportunities from two aspects of the aperture and shutter speed on the adjustment, in order to make the amount of light, doubled.

实际上，使用数码相机提供的预设模式时，相机会从光圈和快门速度两方面进行调节，以使通光量翻倍。

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One stop of light is usually defined as halving or doubling the amount of light entering the camera, depending on the shutter speed, aperture, or ISO changes made.

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Thanks to a larger aperture, floating the entire camera assembly to reduce vibrations, and I suspect a huge amount of software development, the Lumia 920 boasts low light handling abilities closer to that of an SLR than a phone camera.

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