On Sun, Jul 10, 2016 at 11:39 AM, Chuck Norcutt <
chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> Yes, you can focus at f/16. I just tried it outdoors in bright sun and
> various places in the subdued light in the house. Then I pointed it down
> the dark hallway going out to the garage. In the dark hallway I could see
> objects at f/16 but not well enough to focus until I opened to f/8 although
> f/5.6 made focusing easier. Note that the camera was set at ISO 200 and I
> didn't attempt to change that.
>
> To give you an idea of the brightness ranges involved I fitted the m.Zuiko
> 12-50 so I'd have 50mm available to go with the Zuiko 50/1.4 I used for the
> MF lens.
>
> The outdoors shot was 1/320 at f/8 with -0.7 exp. comp. The indoors
> subdued light shot was 2" at f/5.6 with -0.7 exp. comp. The shot down the
> dark hallway was 8" at f/6.3 with no exp. comp. f/6.3 is wide open at 50mm
> on the m.Zuiko 12-50. The camera had great difficulty focusing on the edge
> of a throw rug near the exit door. It took it several seconds to lock in
> and easily lost it. At f/6.3 on the 50/1.4 I think I could have beaten the
> camera and could have gotten an easier and faster shot by opening to f/1.4.
> Keep those old, fast Zuikos. They are still quite usable on an OM-D body.
>
I would be less concerned about how easily you can focus a Zuiko at f11 or
f16 than whether it could be done at all. I am assuming manual focus all
the way. Is there some sort of focus confirm with the adapter you use?
(Not super critical for me, but nice to have.)
Thanks,
Joel W.
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