Whatever it is that you want to be infocus, use this technique: zoom in all the way on the subject, pull focus andzoom back to get the framing you want. In this way your subject will bepin-sharp. You should do this as a matter of course on every single setup, andindeed on every take, especially if the subject moved after the last take.
The reason for zooming in before focusingis that the longest focal length has the smallest depth of field – if something is in focus at thelongest end of the zoom, it will be in focus at every other focal length too.
正确的加悬赏
好像不太对吧,我翻译的是摄影有关的。
追答你不早说...
这是什么东西??