Yep -- classic "combination problem". Best to send them both at the same time
-- I'd bet it's the lens, though....
Gary Edwards wrote:
> I guess that I hadn't had occasion to use my relatively recently-acquired
> Zuiko 100 mm f/2 lens on the black OM-4T - until now. That -4T does not
> like that lens. Every time the shutter is released, the mirror comes up
> part way, the viewfinder goes dark, and . . . . nothing else happens. Until
> I bump the DOF preview button, then the mirror goes up all the way and the
> shutter trips. On occasion, the camera will function properly if the
> aperture is set to f/2. It fails every time at f/2.8 or smaller.
>
> I tried the 100/2 on six other bodies (including an older, champagne -4T) -
> no problem, at f/2, f/8, or f/22. I tried every other lens that I have on
> the black OM-4T - no problem. That test series included a Zuiko 180/2.8, a
> Sigma 70-210/2.8, and a Tamron 400/4, all of which have presumably
> comparable diaphragm mass, etc. The 100/2 does have the stiffest feeling
> aperture linkage of all of the lenses I have on hand (16).
>
> So, I don't know which unit needs fixing - camera aperture drive or lens
> diaphragm? It looks like I'll have to send both off to John, unless someone
> has an idea of where the problem is.
>
> Gary Edwards
>
> people, places, flight at http://home.attbi.com/~garyetx/
>
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