28mm to 45.5 is indeed much.
Anyway, a lens would have to be VERY good to warrant a need for an
'optical adapter' IMO.

Thanks for clearing things up about actual register distance of both mounts.

2010/5/28 Adam Maas <a...@mawz.ca>:
> Those optical adapters can handle a few mm of difference in register.
> You'd need something far more complex to adapt a lens with a ~28mm
> register to a mount with a 45.5mm register.
>
> On Fri, May 28, 2010 at 10:04 AM, Thibouille <pentaxl...@gmail.com> wrote:
>> Well some adapters do sport corrective lenses to take care of that.
>> I won't say this is a good idea (obviously) but those exist (but Leica
>> to Pentax, I dunno).
>>
>> --
>> Thibault Massart aka Thibouille/Thibs
>> ----------------------
>> Photo: K-7, Sigma 28/1.8 macro, FA50/1.4, DA40Ltd, K30/2.8, DA16-45,
>> DA50-135, DA50-200, 360FGZ ...
>> Laptop: Macbook 13" Unibody SnowLeo/Win7
>> Programing: Delphi 2009
>>
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>
>
> --
> M. Adam Maas
> http://www.mawz.ca
> Explorations of the City Around Us.
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-- 
Thibault Massart aka Thibouille/Thibs
----------------------
Photo: K-7, Sigma 28/1.8 macro, FA50/1.4, DA40Ltd, K30/2.8, DA16-45,
DA50-135, DA50-200, 360FGZ ...
Laptop: Macbook 13" Unibody SnowLeo/Win7
Programing: Delphi 2009

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