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Old March 28th 16, 08:49 PM posted to rec.photo.digital.slr-systems
Eric Stevens
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Posts: 13,611
Default Tamron 150-600 Not Focusing

On Mon, 28 Mar 2016 18:01:32 -0000 (UTC), "George Anthony"
wrote:

Having problems obtaining focus. Any hints?


You could tell us more, like what kind of camera you are using and
whether or not you are using tele-extenders.

In the mean time I note from
http://www.dpreview.com/reviews/tamron-150-600-5-6p3
"... he lens has a decidedly slow maximum aperture, starting at F5 and
dropping to F6.3 at full telephoto". This could have something to do
with your problem.
--

Regards,

Eric Stevens