I have two Chinese OM-EOS adapters. Quite different looking so easily
told apart and also of about equal apparent build quality. One,
however, fits all 20 (or thereabouts) of my OM mount lenses while the
other doesn't fit 3 of the non-Zuiko lenses. The adapter fits the
camera bodies OK but these three specific lenses have flanges that are
too thick to fit into the adapter. Those that do not fit are the
Vivitar 90/2.5 macro, Soligor 35-70/2.5 and (not long ago mentioned)
Tokina 17/3.5. To be sure, the tolerance error is surely measured in
ten thousandths of an inch and, although all the Zuikos fit, some fit
more tightly than they should.
The one that doesn't fit everything looks just like all the others
currently for sale on oboy. I've been meaning to buy another to see if
it has the same tolerance error. Interestingly enough, of the three
that do not fit, two are of special interest for use on the 5D.
Chuck Norcutt
Joel Wilcox wrote:
> On 4/1/07, GMcGrath@xxxxxxx <GMcGrath@xxxxxxx> wrote:
>> I've been sitting on the fence, but Olympus has finally announced the
>> cameras I've been waiting on to justify the purchase of a digital SLR
>> system. I
>> know that there are a lot of other options out there, but Olympus' size/style
>> philosophy just resonates with me. I'm looking forward to the chance to get
>> my
>> hands on an E-510 and very curious about the next E-singledigit. Over the
>> years, I've dabbled in digital capture via a C-2100, D-40, Stylus 500, and
>> Panasonic FZ20, waiting for the right SLR to come along.
>>
>> Anyway, is Olympus still offering the OM to E adapter free, or will my wait
>> cause me to have to pay for one? The thought of using my 90/2 as a 180mm
>> macro
>> has me salivating. :-)
>>
>> Greg
>
> I seem to recall a few posts about subtle differences among several of
> the Chinese/Hong Kong adapters -- not so much build quality but
> possibly actual differences in thickness of the adapter. In other
> words, not an entirely trivial thing.
>
> The 90/2 is my most used Zuiko via adapter. I really should use the
> 50/3.5 more, since when I was testing it was about the best Zuiko I
> could find on the E-1. The bokeh characteristics carry over with the
> 90/2 however.
>
> Joel W.
>
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