09-22-2010, 03:52 PM
I am experiencing an under exposure problem with my new Tamron 17-50mm lens on a Nikon D300 body. The model (A16N II) is the SP AF17-50mm F/2.8 LS IF XR Di II
The lens is made in Japan.
I don't have the same problem with my Nikkor lenses or my Tamron 90mm Macro lens.
I need to adjust the EV to approx +0.7 EV to +1.3 EV to get a proper histogram on the D300.
The histograms on the D300 clearly shows the problem, as most of the bars are towards the left, and none towards the right.
Photographs taken in bright sunlight have a dark appearance, with properly exposed highlights.
The pictures have the appearance of low-key photographs. The highlights appear to be properly exposed, but detail gets lost in the shadows. Some of the photographs looks very good.
I noted a similair complaint of the Flickr website as well as on Amazon.com
Link to "Tamron 17-50 under-exposure?" in Flickr :
http://www.flickr.com/groups/tamron17-50mm/discuss/72157594571525532/
The lens is made in Japan.
I don't have the same problem with my Nikkor lenses or my Tamron 90mm Macro lens.
I need to adjust the EV to approx +0.7 EV to +1.3 EV to get a proper histogram on the D300.
The histograms on the D300 clearly shows the problem, as most of the bars are towards the left, and none towards the right.
Photographs taken in bright sunlight have a dark appearance, with properly exposed highlights.
The pictures have the appearance of low-key photographs. The highlights appear to be properly exposed, but detail gets lost in the shadows. Some of the photographs looks very good.
I noted a similair complaint of the Flickr website as well as on Amazon.com
Link to "Tamron 17-50 under-exposure?" in Flickr :
http://www.flickr.com/groups/tamron17-50mm/discuss/72157594571525532/