Tamron 24-70 VC aperature issue

Started Dec 23, 2013 | Discussions thread
Azzy
Regular MemberPosts: 275
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Re: Tamron 24-70 VC aperature issue
In reply to leadog2, Dec 23, 2013

leadog2 wrote:

Yes, just got my 24-70 VC in a few days ago USA model ver Nikon A007N SN #0199**

and yes the Aperture lever stays at 2.8 and close a very little to about about f4 then seem ok pass F4 there is a adjustment on the lever for the blades to close sooner.

At 3.2 and 3.5 it overexpose about a stop. The camera in auto mode thinks its at f3.2 but the blades are still at f2.8 so the the camera let more light in, (lower shutter speed or higher ISO). Then the photo is overexposed a little. There is a adjustment to the Aperture lever that need to be adjust so the blades close sooner.

see this :

http://www.dpreview.com/forums/thread/3243718?page=3

From what I read this only affects model with 01xxx SN, all 3 copies I used were 02xxx, you probably received one of the last copy with the issue

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