The multi coating is not that big a deal if you follow the the usual
precautions of not shooting into a light source and use a good lens
hood.  However the later lenses, those which are the same optical
formulas as the subsequent [K] mount lenses are usually better than
the same focal length of an earlier design.  That's kind of a duh
comment, but it is something to keep in mind.  The Super Takumar
lenses coatings were excellent and are still better than many
manufactures mulit-coatings.

Tim Bray wrote:

> On Wed, May 27, 2009 at 5:25 PM, Bob Sullivan <[email protected]> wrote:

> Tim,
>>A screwmount SMC Pentax 300mm f4 or 400mm f5.6 would be great
>>Most everyone else passes on these as too old, their problem!

>Those 300 screwmounts (under the Takumar name, right?) are all over
>the place in the non-SMC version, harder to find with the SMC.  How
>big a deal is the coating?  -Tim

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