Bernard
To the best of my knowledge, ALL aluminium surfaces are anodized,
colours may vary from natural to black, and even tinted ones.
The case where aluminium is not anodized is even worst, since it
oxidizes, and the oxide will come away from the surface.
Just think of iron, the difference being that while rust does'nt adhere
on iron, the oxide on aluminium will be adherent, but not to the point
not to be worn away from continuous use.
A workaround for this, again suggestion from my friend, could be to
lube very SPAIRINGLY the alluminium parts undergoing friction, be it
against the camera flange or against the lens flange, that, by the way,
should be made of stainless steel.
Hope this could be of help.
Alfredo
On Aug 30, 2005, at 1:07 PM, Bernard Frangoulis wrote:
>> BTW, I apologize for not having answered to Your post on aluminum
>> adapers, Bernard, I did'nt have much time, and lastly I forgot to
>> answer... D'oohh!
>
> No problem!
>
>> The fact is that the anodization layer on an aluminium surface,
>> doesn't
>> stick to the aluminum like galvanic nickel would on copper.
>> And for it's nature, under friction is likely to disgregate, producing
>> fine powder.
>> Just thing of mounting an objective on an adapter, and the
>> sollecitations it undergoes.
>>
>> This, was told me from a friend, a mechanic with the hobby of
>> photography.
>>
>> Alfredo
>
> Thanks. I guess the anodized part is the black part? On the Nikon
> adapter from Poland, it is located on the side that mounts on the
> camera, not on the side that attaches to the lens. Too bad, as I will
> keep the adapter permanently attached to the Nikon lens anyway.
> Actually the non anodized side does not look very nice at all, it is
> rough - would it not release powder debris as well, aluminium not
> being very hard?
>
> Bernard
>
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