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08-10-2009, 04:50 PM   #1
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Takumar SMC

Hello!
Could anyone give me some information on two different lenses?
-Takumar SMC 500mm f/4.5
-Takumar 500 mm f/5
Are both these lenses coming with a M42 thread?
Are they both for 35 mm or one (either) is for medium format?
In case one is for medium format, which Pentax system suits them (645, 6x7 etc)?
I was thinking of using one of these two lenses for astrophotography...
Would anyone suggest me one instead of the other?
Where could be the best place to look for (and hopefully find) these lenses for sale?

Thanking you all in advance for your help,
Have a ncie day!!!
Andrea

08-10-2009, 08:50 PM   #2
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The Takumar 500 mm f/5 is a much older lens, with just two elements. I'm not 100% sure but it looks like it was an M42 lens. The Super-Multi-Coated Takumar 500mm f4.5 is a newer design with 4 elements. That one I know is for 35mm film and M42 mount. It was also produced in a K-mount version with a manual aperture (until 1998!).
08-11-2009, 03:45 AM   #3
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I've used the 300mm SMC TAKUMAR with success, both the 35mm and Pentax 67 version for astrophotography. M42 glass is still good. There is a touch of Chromatic Aberration in these older lenses, but they are cheap on the used market.
08-14-2009, 02:46 AM   #4
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Original Poster
Hi guys,
hank you very much for the answers, I really had a stroke of luck, surfing on the web I found two 500 f/4.5. One was on e-bay and the other one came out on a private site. I should be getting the lens soon, then I'll let you know. I might be posting a couple of pictures of it

Happy phots all!!!

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