Archive 2009 · Zuiko 18mm infinity adjust?

zuiko
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p.1 #1 · Zuiko 18mm infinity adjust?

Hello,

Is there a way to adjust the infinity focus on the OM-Zuiko 18mm f3.5?
On my OM bodies the infinity is now at the 3m mark, that is a bit too much off for my taste. (it is the same on my digital cameras)

Thanks in advance,

Iwert

Mar 17, 2009 at 02:50 AM

StevenPA
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p.1 #2 · Zuiko 18mm infinity adjust?

I'd be tempted to try a thicker adapter before adjusting the lens.

Mar 17, 2009 at 03:07 AM

pdmphoto
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p.1 #3 · Zuiko 18mm infinity adjust?

I think you mean a thinner adapter?

Mar 17, 2009 at 03:12 AM

zuiko
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p.1 #4 · Zuiko 18mm infinity adjust?

No, the adapter should be thicker to reach infinity focus. Anyway, on my OM-bodies it is of no help, so I'ld like to adjust the lens.

Iwert

Mar 17, 2009 at 03:15 AM

StevenPA
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p.1 #5 · Zuiko 18mm infinity adjust?

The lens is reaching infinity before the infinity mark, so the lens needs to be moved further away from the film plane.

I missed that this for use on a OM camera. Someone else will have to offer advice. Is it possible to remove the rubber grip, loosen some screws, and adjust the helicoid? I believe the OM 55/1.2 is like that, but I'm probably wrong.

Mar 17, 2009 at 03:32 AM

pdmphoto
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p.1 #6 · Zuiko 18mm infinity adjust?

No you are correct, I read it wrong. If it is reaching infinity *before* the infinity mark, then the adapter would be too thin.

Mar 17, 2009 at 04:50 AM

Ed Sawyer
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p.1 #7 · Zuiko 18mm infinity adjust?

FWIW, it's an internally-focusing lens (e.g. floating design). From the lens parts diagram it does look like there are grub screws under the focus ring rubber. I'd ask John Hermanson probably.

Good luck!
-Ed

Mar 17, 2009 at 08:45 AM

kays
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p.1 #8 · Zuiko 18mm infinity adjust?

They still service these and will do this for you... I am searching my bookmarks now for a link that is actually helpful... But I thought in the mean time I'd let you know that option is out there.
JK

Mar 24, 2009 at 01:56 AM


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