asxu wrote in post #4144261
i'm confused feng - mind explaining what you're talking about?
He's gone off line.
He mentioned to me the other day that with a zoom lens, that runs 18-55, with f stop from 4-5.6, (or whatever the numbers are) when you're at 18 the f stop is at 4 minimum. When you zoom out, f stop increases to 5.6 minimum, and what should happen when you zoom back in the f stop returns to 4. His lens that he had doesn't do that, so he needs to remember to manually stop back when zooming back. (Got all that?!?! :confused
He has got caught out a coupla times with this.
I checked mine and it stopped out then back automatically when zooming in and out. But it may come down to settings - AV, M etc and the particular lens.