Archived posting to the Leica Users Group, 1996/04/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Mon, 22 Apr 1996, Eric Welch wrote: SNIP > As a matter of fact, if your eyes are good, when the speed of focusing isn't > important, AF is a detriment. I heard some magazine did a test comparing AF > systems to manual focusing, and it turns out the manual focusing is more > accurate, except when speed is of the essence. So what you say is very true, > but more things than sports can benefit from AF. But it should be like auto > expsoure, used when it's appropriate. The magazine was Popular Photography: they ran the test some time last year and their results were striking, but they used a magnifier on the camera. Apparently, autofocus sensors can only resolve 40 or 50 lpmm (if my memory serves me correctly - I am going to go to the library and check this out). I am not sure that an unassisted human eye can do any better than that. Gary Toop