问题描述
人眼是否能够感知需要150ms加载的图像与需要160ms下载的另一张图像之间的差异？
如果一个页面有30-40个图像，那么这个10ms的差异是否开始产生差异？
Can a human eye perceive a difference between an image that takes 150ms to load and another image that takes 160ms to download?If a page has 30-40 images, then does this 10ms difference start making a difference?
推荐答案
10 ms可能只是勉强注意到。在刷新率为60 Hz的典型笔记本电脑上，每帧在屏幕上大约16-17 ms，因此（其他条件相同）10 ms延迟意味着大约66％的机会使图像显示为一帧之后。
10 ms might be just barely noticeable. On a typical laptop with a refresh rate of 60 Hz, each frame is on the screen for about 16-17 ms, so (all else being equal) a 10 ms delay means a roughly 66% chance of making the image show up one frame later.
然而，大多数用户都不会注意到1帧延迟（这是因此导致的最大延迟）。这对于动画来说会非常明显，但在静态图像出现的时候却不是很明显。
However, a 1-frame delay (which is the maximum delay possible as a result of this) would in all likelihood not be noticed by most users. It would be very noticeable for animation, but not very noticeable in terms of when the static image appears.
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