There is Canon EOS (auto focus) and Canon FD and earlier (manual focus). There
is 0 compatibility between them. It is possible to buy a third party FD to EOS
adapter but infinity focus requires an optical element such that you end up
with a very low power teleconverter. I've only encountered a couple of people
who have owned same. None were pleased. I believe Canon made one as well for
a short period after the EOS system was introduced but I don't think it
performed well either and didn't last long.
I don't know the full extent of Nikon lens compatibility except that what you
get depends on the price of your camera body. The lower the level of your body
the less the compatibility which I think in many cases is zero.
Chuck Norcutt
> -------Original Message-------
> From: Winsor Crosby <wincros@xxxxxxxxxxx>
> Subject: [OM] Re: canon 5d manual focus lenses which work well/poorly?
> Sent: Jun 17 '07 01:22
>
>
> There is backward compatibility in Canon and Nikon systems as well.
> With Nikon it varies a bit depending on the camera which is, I
> imagine, similar with Canon. I just bought a used 50mm 1.2 manual
> focus lens(another gem from KEH) for my D200 and it meters just fine
> with no special contortions to go through. While focus is dicey on
> the screen manual focus confirmation is very precise. If the lens was
> designed for an older mount originally by an independent lens maker
> it should work as well.
>
>
>
> Winsor
> Long Beach, California, USA
>
>
>
>
> On / June 16, 2007 CE, at 4:06 PM, Joel Wilcox wrote:
>
> > As to the K10D -- I've loved what Larry H. has shown us, though I
> > assume it's mostly the photographer and not the camera. Any reason
> > actually to think the fabulous backward compatibility of the Pentax
> > system actually makes things better or easier with that system?
>
>
>
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