Mark,
I think that would be the Super Takumars and earlier screwmount lenses.
I believe all the Pentax K mounts and later are coated on both sides,
EXCEPT for the Takumar (not Pentax) brand.  That is the
Takumar K28/2.8, Takumar A28/2.8, Takumar K135/2.5, Takumar K135/2.8,
and a number of zooms.  Check here under Non-SMC zooms.
http://www.bdimitrov.de/kmp/lenses/index.html#data
Regards,  Bob S.

On Sun, Jul 12, 2009 at 8:06 PM, Mark Cassino<[email protected]> wrote:
>
> Brendan -
>
> I am taxing reluctant brain cells here, but I seem to recall reading that  
> early SMC Takumar lenses were only coated on on side - the side facing away 
> from the camera. These would be older, screw mount lenses.
>
> I think I read that on the internet somewhere. granted - that's a big and 
> uncertain category of information.
>
> - MCC
>
>
>
>
> ----- Original Message ----
> From: Brendan MacRae <[email protected]>
> To: pdml <[email protected]>
> Sent: Sunday, July 12, 2009 4:12:39 PM
> Subject: SMC Question...
>
>
> Was SMC applied to both sides of lens elements?
>
> -Brendan
>
>
>
>
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