09-19-2011, 01:20 PM
SOLUTION: An under exposure problem on my Tamron 17-50mm lens (Nikon) was fixed by an mechanical adjustment of the aperture controller of the lens. The lens under exposed by approx 1 EV in automatic.
I contacted Tamron Japan and they refered the lens to the local Tamron repair centre.
The repair must be done by an official Tamron repair centre. <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' />
I noted others reported the same problems with Tamron lenses. There may be a problem with the quality control at Tamron regarding the aperture control settings of the Tamron lenses.
I contacted Tamron Japan and they refered the lens to the local Tamron repair centre.
The repair must be done by an official Tamron repair centre. <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' /> I noted others reported the same problems with Tamron lenses. There may be a problem with the quality control at Tamron regarding the aperture control settings of the Tamron lenses.