有了防抖镜头/机身,就不用担心照片因为抖动而模糊吗?

很多朋友认为我拍这张照片是因为它被抖动了,所以我很困惑。难道相机(镜头)没有防抖功能,不会因为握手而模糊吗?

要理解这个问题,有必要回到一个基本概念:安全快门速度。

摄影的女孩

手持相机拍摄的安全速度原则:安全速度是焦距的倒数。使用35mm镜头时,快门速度不能低于1/35秒,使用200mm镜头时,快门速度不能低于1/200秒,否则画面会模糊。

知道了这条规则,就很容易理解,因为我们的相机手总是或多或少有些紧张,“拍摄”是因为光线太暗,快门速度达不到安全的快门速度。防抖动功能允许我们在低于安全快门速度的情况下拍摄清晰的照片。

首先可以得出的一个结论是,当有足够的光线时,我们不需要防抖动。

什么是足够的光线?白天我们可以大致认为,户外光基本上是一个安全快门足够达到100毫米或更少的焦距,在早上和晚上的时候天气不好,晚上拍摄,在室内,它是一个更常见的光线暗的场景。

目前,尼康(Nikon)和索尼(Sony)等多家公司推出的最新防抖技术号称能将安全快门减少约四档。例如,一个200mm的焦距镜头有一个1/200秒的安全快门。anti-shake打开,200/24 = 13,在1/13秒的快门速度,仍有一定的概率可以清晰的图片,我们知道,根据正常的经验,这比一个安全快门速度慢得多,和普通手持设备不太可能拍清晰照片。

有了以上的知识,我们可以得出另一个结论:防抖动功能只能在特定场景中抵消部分抖动,而不是完全的“防抖动”。例如,在上面的例子中,如果快门速度低于1/13秒,那么即使是图像稳定也无能为力。然而,我们的室内和夜景的光线强度通常低于1/10秒,甚至几秒。第二,许多朋友通常用手拍夜景,或者在室内拍摄。如果你想使用防震功能,你可以清楚地拍摄。我想说:这仍然很困难。

综上所述:防震功能只能提高在弱光条件下清晰手持拍摄的成功率。如果光线强——比如白天——那么我们就可以不加防抖而清晰地拍摄,光线太弱——比如晚上——防抖也没用。

Many friends think that my photo was taken because it was shaken, so I am confused. Is n’t it that the camera (lens) has anti-shake function, it wo n’t be blurred because of hand shake?

To understand this problem, it is necessary to return to a basic concept: safe shutter speed.

The principle of safe speed for handheld camera shooting: safe speed is the reciprocal of focal length. If a 35mm lens is used, the shutter speed must not be lower than 1/35 second, and when using a 200mm lens, the speed must not be lower than 1/200 second, otherwise the picture may be blurred.

Knowing this rule, it is easy to understand that, since our camera hands are always more or less jittery, "shooting" is because the light is too dark and the shutter speed cannot reach the safe shutter speed. The anti-shake function allows us to take clear pictures at a speed lower than the safe shutter speed.

Well, one conclusion that can be drawn first is that we don't need anti-shake when there is enough light.

What is enough light? We can roughly think that during the daytime, outdoor light is basically a safety shutter with enough light to reach a focal length of 100mm or less, and in the early morning and evening when the weather is bad, shooting at night, and indoors, it is a more common low-light scene.

At present, the latest anti-shake technology of several companies from Nikon and Sony claims to reduce the safety shutter by about four stops. For example, a 200mm focal length lens has a safety shutter of 1/200 second. With anti-shake turned on, 200/24 = 13, At a shutter speed of 1/13 seconds, there is still a certain probability that you can take a clear picture, and we know that according to normal experience, this speed is much slower than a secure shutter, and ordinary handhelds are unlikely to take clear pictures.

With the above knowledge, we can draw another conclusion: the anti-shake function can only offset part of the jitter in specific scenes, not the complete "anti-shake". For example, in the example above, if the shutter speed is lower than 1/13 seconds, then even the image stabilization is powerless. However, the light intensity of our indoor and night scenes is usually lower than 1/10 seconds, or even a few seconds. Seconds, many friends usually take pictures of night scenes by hand, or shoot people indoors. If you want to use the anti-shake function, you can shoot clearly. I want to say: It's still difficult.

To sum up: The anti-shake function can only improve the success rate of clear hand-held shooting in low light conditions. If the light is strong-for example during the day-then we can shoot clearly without anti-shake, the light is too weak-for example at night-the anti-shake will not help.

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