Oh I like the second "i" in aluminium !
At least there is a second person on this list who can spell correctly :-)
jh
----- Original Message -----
From: "Wayne Harridge" <wayneharridge@xxxxxxxxxxxxxxx>
To: "'Olympus Camera Discussion'" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, December 29, 2009 6:24 PM
Subject: Re: [OM] New Digital Back - How much play should there be in
theadapter EOS-OM
> Excellent illustration of the problem, bad enough if the adapter is brass,
> much worse if it's aluminium.
>
> ...Wayne
>
>>
>> They all should be made by NC machine, even in mainland China they
>> can't
>> affort to hand made them and sell at such low price. The lens adapters
>> I
>> have are very accurate (from sample to sample), of course it is
>> possible
>> that some cheaper manufacturer just don't control it very well in the
>> process or the design is weaker. 5mm movement is too much, the lens
>> lock
>> simply does not fit in.
>>
>> The major problem of these EOS adapter is there is no steel spring in
>> use
>> like the original OM lens adapter. The brass is too soft, if you mount
>> heavy
>> lenses, after playing it for some time the three "springs" will be
>> flatten
>> out and the friction is reduced, worse cases there will be a gap
>> between the
>> lens and adapter but there should be no play if the lens lock works.
>>
>> This image shown the construction of the original OM mount:
>>
>> http://www.accura.com.hk/temp/IMG_8106.JPG
>>
>> This image shown the Chinese adapter, note the lens lock see if this is
>> the
>> problem for lens rotation:
>>
>> http://www.accura.com.hk/temp/IMG_8107.JPG
>>
>> C.H.Ling
>>
>
>
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