On Thu, Mar 04, 1999 at 01:39:56PM +0100, Hans van Veluwen wrote:
> No, what Barry described is the behaviour of this lens that when you turn
> the zoom ring from the 70mm position towards the 35mm position, while the
> aperture ring is not set at F3.5, you can actually see the aperture blades
> close down a bit.
My 35-70/3.6 does this too, but when it's wide open. A friend suggested this
was to reduce edge aberrations at some focal lengths...dunno if he's right
or not, but I'd never seen a zoom - fixed or variable aperture - do it
before.
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