For what it's worth, The Asahi Pentax Guide (Oosten) says: "The lens can be distinguished from its successor (Model II) by a small glass protrusion on the rear element and by its slightly greater weight."
I think this would require a side-by-side comparison. Elsewhere, the same source says: "Super Takumar 1:1.4 / 50mm [Model 1] Year of Mfg: 1964 - 1965 Elements/Groups: 8/7 Diaphragm: fully auto Angle of View: 46 deg. Minimum Aperture: 16 Minimum Focus: 0.45m Filter Size: 49mm Length: 37.5 mm Largest diameter: 59mm Weight: approx. 245 grams Product number: 358; 35800 (from 10 - '66) Number Produced: n/a Serial Number Range: n/a Changes include: diaphragm ring with fine or coarse knurls; round or oval lettering." "[Model II]" (only differences listed) "Year of Mfg: 1965 - 1971 Elements/Groups: 7/6 Weight: approx. 230 grams. Product Number: 378; 37800 (from 10 - '66); 37801 (white dot f/2, from 11 - '66) 37802 (from 4 - '69) Changes include: A/M lever, Auto/Man lever, small internal mechanical changes and white dot f/2." The only things (without taking it apart) that will set them apart for sure are: The product number on the back of the Auto/Man switch, and the weight. The "protrusion of rear glass" would be easier to assess with both types of lenses to hand. ppro > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Steve Larson > Sent: Saturday, November 10, 2001 8:46 AM > To: [EMAIL PROTECTED] > Subject: Re: Super Tak 50 1.4 Elemental difference > > > > Hi Todd, > I think you`re right, the one I have has a yellow-golden tint and is > smaller in length and barrel diameter than the SMC Takumar 50 > 1.4, which means that if it had the extra element it would be > longer in length, or at least as long as the SMC Tak. > Thanks, > Steve Larson > Redondo Beach, California > ----- Original Message ----- > From: "Todd Stanley" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, November 08, 2001 10:52 AM > Subject: Re: Super Tak 50 1.4 Elemental difference > > > > I believe you can tell from the color of reflected light off the coatings. > > I don't really remember, but I think a greenish tint corresponds to the > > older design. Maybe someone else knows. > > > > Todd > > > > At 04:16 AM 11/7/01 -0800, you wrote: > > >Hi, > > > Is there a way to tell the 8 element 7 group Super Takumar 50mm 1.4 > > >from the 7 element 6 group Super Takumar 50mm 1.4? I don`t have > > >a scale, if that`s the only way to tell them apart. I think this came up > > >a while back, and seem to recall the 8/7 is rare? > > >Steve Larson > > >Redondo Beach, California > > >- > > - > > This message is from the Pentax-Discuss Mail List. To unsubscribe, > > go to http://www.pdml.net and follow the directions. Don't forget to > > visit the Pentax Users' Gallery at http://pug.komkon.org . > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .