I have been having a strange problem with my OM-4 Ti for some months.
In some pictures, the left side (or the bottom side for vertical
shots) is dark. This affects about 10-15 % of the picture field. The
limit between the dark and the unaffected part is gradual, blurred
(as in a graduated filter).
The occurrence of this phenomenon appears to be random. In some
rolls, not a single photo is affected, while in others, up to half of
them are touched. It seems to appear more frequently with the
180/2.8, but with other lenses it does occur as well (e.g. the
35-105). The "unaffected" part of the picture can be normally
exposed, or sometimes slightly underexposed.
BTW, this happens even with new (357) batteries ;-)
What could be the cause of this annoying behaviour ?
Bernard
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