is it an SLR? if it had a bit of a knock recently the mirror could have moved? try getting a tape measure and focussing to known distances and the horizon (or as close to it as you can get) and seeing how it matches with the markings on the lens.
@hoefla started
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is it an SLR? if it had a bit of a knock recently the mirror could have moved?
try getting a tape measure and focussing to known distances and the horizon (or as close to it as you can get) and seeing how it matches with the markings on the lens.