Underexposure with Tamron 55-200 on D200 and D70

[cabophoto]

When I mount my Tamron Tamron 55-200/4-5.6 Di II LD (the lens reviewed by fellow

PHOTO.NET user Bob Atkins here http://www.photo.net/equipment/tamron/55_200_Di/) on

my D200 or my D70, the meter reading is consistently about one stop higher than

with my other lenses. The difference is the same no matter if I use

center-weighted, matrix or spot metering. Strangely enough, the aperture is

displayed correctly (i.e. wide open the aperture changes when I zoom out).

 

Has anyone had a similar experience ? What could be the reason ?

 

Many thanks in advance

 

Carsten

 

http://www.cabophoto.com/

[walterh]

Carsten I posted a similar problem regarding the 12mm-24mm Sigma lens a while ago:

 

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00AG59

 

If you scroll to the very bottom you find that images taken with the Sigma lens (two specimens tested) were about at least 1/2 f-stop underexposed compared to other lenses and in direct comparison to the 12mm-24mm Nikkor. Though 1/2 f-stop may seem little and can be compensated easily I prefered not to get this lens at that particular offer. I change lenses quite often and compensation for special lenses seemed not acceptable to me. Perhaps there is a fix now for that particular lens. I found Sigma support (here in Germany)excellent in updating my 70-200mm Sigma lens with a focus problem on the D200. You might contact Tamron directly.

[cabophoto]

Walter,

 

many thanks for the info.

 

>>I change lenses quite often and compensation for special lenses seemed not acceptable to me.

 

Same here.

 

>>I found Sigma support (here in Germany)excellent in updating my 70-200mm Sigma lens with a focus problem on the D200.

 

Yes, I had the same experience when I sent in my 30/1.4 Sigma.

 

You're probably right, contacting Tamron would be the best way to find out what's going on.

 

Carsten