[OM] Re: (OM] - 100mm f/2.0 and focus past infinity (plus: links to oly pictures)

[andrew fildes]

Then of course, you could try focussing on the full moon - that's 
just about far enough away to qualify as infinity :)
AndrewF


>  > Any help from your experience would be greatly appreciated!
> >  Ciao
>  > Fabio
>
>
> In my experience the Zuiko 100/2 has very *critical* focusing. (I 
> don't know if
> *critical* is the correct word, so I will explain).  I just took mine out and
> looked.
>
> Using a split-image screen.
>
> At 1000+ metres the mast of a yacht lines up exactly on both sides of the
> split-image line when the focus is turned to infinity.
>
> A tree branch at 250 metres, lens turned to infinity, is VERY distinctly NOT
> in focus. On either side of the split, it did not line up. The focus had to be
> turned back a little.
>
> So it seems that an object has to be at 500 - 600 metres before the 100/2
> *thinks* it is at infinity.
>
> Does that help?

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