Hi Carlos et al,
Sounds like maybe the "Bowen" adapter has to have a weak
glass element, because either the mounting lugs on the flange interfere
and/or because the throat diameters are similar and so are incompatible.
Adding the lens allows the flanges/throats to be separated.
I could not find any bowers alpha-OM adapters listed on ebay, although there
are lots of adapters for other vendor's lenses to alpha. This means you could
kludge an adapter using a weak lens adapter and machining it down and attaching
an OM flange if the bowen adapter is unavailable?.
The pros of doing that would be a 25Mpixel OM lens compatible, FF camera *with
IS *!
You can't get that with any Canon adapted body.
Reading the Alpha reviews it seems like it is pretty capable, although slightly
larger than Canon 5D mkII. Seems like the viewfinder is more OM like with a
large bright prism too.
Given the high resale prices of Canons, maybe Alphas will drop in price
quicker. In two years, you could get a deal on a used alpha 900 to adapt to
your old OM's?
Tim Hughes
--- On Wed, 9/9/09, Carlos J. Santisteban <zuiko21@xxxxxxxxx> wrote:
From: Carlos J. Santisteban <zuiko21@xxxxxxxxx>
Subject: Re: [OM] New affordable Sony FF
To: olympus@xxxxxxxxxxxxxxxxx
Date: Wednesday, September 9, 2009, 8:22 AM
Hi Tim, Mike and all,
Tim hughes wrote:
>In theory you could get an adapter for OM to alpha register, but it
>would be
>pretty thin ~1.5mm. Anybody know if one is available?
Yes, but with such a small distance, the camera's mount should be quite
_wider_ than the lens' mount, otherwise there would be no room for the
bayonet lugs:
>Such adapters do exist, though I have not had my hands on one:
>
><
http://olympuszuiko.wordpress.com/2008/01/01/mounting-manual-lenses-on-sony-alpha-700/
>
From: usher99@xxxxxxx
>The "Bower adapter" looks interesting but has a glass element and is a
>weak TC. Not an optimal solution. Perhaps the distance
>is too tight to construct one w/o optics. I at least have never seen
>such an adapter.
It also mentions incompatibilities with some Zuikos as well :-( Definitely
not a good solution.
Cheers,
--
Carlos J. Santisteban Salinas
IES Turaniana (Roquetas de Mar, Almeria)
<http://cjss.sytes.net/>
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