Congratulations on the purchase! I have the same problem when I use all
three extension rings together with any lens on the 4T. Same slight twist
to correct the problem. I'll be following this with interest to see a
solution. I think the 4T has slightly less power to move the aperture lever
than my 1 MD. I don't have the problem with the 1 MD .
Gregg
From: John Palmer
> G'day all,
>
> I have a wee mechanical problem and I'm wondering if anyone can throw
> some light on it.
>
> I've just bought a used lens - 90/2 macro, which is, as everybody
> says, a real beaut. However, it doesn't get on with my OM4Ti. It's
> fine wide open, but stop it down even just to f/2.8 and the shutter
> doesn't fire. The mirror goes up, but the shutter doesn't open. First
> time through I thought it was dead batteries, but putting new ones in
> had no effect. The only thing that brings the camera back to life is
> going as if to remove the lens from the body - press the button in and
> give just the tiniest twist and the shutter fires.
>
> I've never seen this before. This body is fine with all other lenses.
> This lens is fine on every body that I've tried except my 4Ti (2N,
> 2SP, rather sick 4 and new 3Ti), so I'm a bit baffled. An obvious
> culprit might be the diaphragm stop down lever on the lens, but it
> doesn't feel at alll sticky or heavy to me.
>
> Any suggestions?
>
> John
>
>
>
>
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