If you have problem in manual mode, most likely the aperture coupling lever
has problem. I had a tokina 28-70 that off by 2/3 stop, I corrected it by
adjusting the position of the aperture coupling lever.
C.H.Ling
----- Original Message -----
From: <gmeunier1@xxxxxxx>
>
> Quoting Walt Wayman <hiwayman@xxxxxxx>:
>
>> What body are you using? Are you shooting on manual or auto? If manual,
>> how
>> are you determining exposure?
>
> OM4Ti, in manual mode. Exposure from a gray chart. Metering done in
> exactly the
> same way for both lenses. So something is definitely wrong with that lens.
>
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