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Posted by Frank on September 09, 2001 at 13:43:55:
Hi everyone,
I recently bought a new Cosina 28-210 AF 3.5-5.6 for Canon EOS.
The problem: the autofocus works fine and the camera gets focus lock
only when the subject is at 15-20 mt. from camera or less, but when the
subject is very distant, the focus ring goes to infinite, the focus point
lights and beep sounds both very shortly, and the focus indicator in the
viewfinder blinks, so I can't take the shot cause the shutter won't fire
until focus is locked. This happens in bright daylight, not depending on
light conditions, subject contrast, focal length, or any other question.
When I change the subject to a nearest one, sometimes it works,
sometimes doesn't, and when it does the focus ring makes a small movement.
I know I can always turn switch of the lens in manual focus and take the
shot, or go to another AF mode than one shot.
My question: is it related to this kind of hyperzooms, a quality item,
third party equipment? Any idea?
Thanks!
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