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06-16-2012, 10:47 PM   #1
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Tessar Type 4-element lens in K-mount?

I am very partial to the Tessar look and had been using a tessar type M42 lens on my ME Super.

Would be nice if I can find a Tessar ype in K-mount under $100 so I can focus at full aperture.

Does such a lens exist?

06-16-2012, 11:00 PM   #2
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Of course... the DA 40mm is a Tessar design.
06-16-2012, 11:08 PM   #3
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QuoteOriginally posted by creampuff Quote
Of course... the DA 40mm is a Tessar design.
Does it have an aperture ring I can control? ME Super does not control the aperture.
06-16-2012, 11:09 PM   #4
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I do a quick search and I find:

* This expired Marketplace listing for a Zeiss-Contax PK-mount 45mm Tessar, a Leitax conversion. I have a Chinon 45/2.8 in PK-M mount that I think is a copy of this Tessar.

* A comparison of "yummy pancakes", between Zeiss Tessar 45/2.8 and Pentax 40/2.8, with "very similar optical design". I've seen comments that the DA LTDs (including the 40) are Tessars. Probably the M42/2.8 also.

And I think many 50mm macro lenses are Tessars. You can probably find other candidates with this search: http://www.google.com/search?q=tessar+pentax+-m42. Good luck!

06-17-2012, 03:49 AM   #5
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Both Pentax 40mm lenses are 5 element designs, not really Tessars. The M50/4 macro is actually a Tessar as far as I know though.

Leitax conversions don't allow open aperture focusing, but that Chinon will. No idea about the optical design.
06-17-2012, 03:58 AM   #6
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I'd recomment the Pentax 50mm f4 macro lens (it comes in both K and M series versions, which are the same optically). That is a 4-element tessar lens, and it is a fantastic lens (my favorite optic).
06-17-2012, 04:46 AM   #7
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here you can see the lens elements
Pentax K-Mount Lenses and Lens Accessories

The macro 50mm f/4 is indeed one.
06-17-2012, 06:51 PM   #8
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The Ricoh XR 45mm f2.8 is a tessar and in K mount but I doubt it if you can find it for less than a $100. It's very light and made of plastic. It's about the same weight as the new DA 40 XS - 52 grams while the Ricoh is about 55 grams.


Last edited by mannyquinto; 06-17-2012 at 06:57 PM.
06-19-2012, 01:55 PM   #9
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The Industar 50mm f3.5 is a classic Tessar designs.

There are some Zeiss Jena 50mm Tessars in M42.

The Pentax Takumar 50mm f3.5 in M37 should also be a Tessar design.
06-19-2012, 02:35 PM   #10
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Tessar - Wikipedia, the free encyclopedia

QuoteOriginally posted by GhoSStrider Quote
The Industar 50mm f3.5 is a classic Tessar designs.

There are some Zeiss Jena 50mm Tessars in M42.

The Pentax Takumar 50mm f3.5 in M37 should also be a Tessar design.
But none of those are PK mount. I have a Zeiss Tessar 80/2.8 scavenged from an Ikonta folder; it's not PK. I think my Meyer Helioplan 40/4.5 and Kilfitt Makro Kilar E 40/3.5 and Meyer Primotar-E 50/3.5 are Tessars, but in Exakta mount. I've some Xenars and Ektars and enlarger lenses that are tessar-type also, but not in PK mount.
06-19-2012, 03:11 PM   #11
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Oooops...hadn't noticed the K-mount requirement. Sorry about that.
06-19-2012, 03:23 PM   #12
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QuoteOriginally posted by RioRico Quote
I have a Zeiss Tessar 80/2.8 scavenged from an Ikonta folder
And we complain about Canonites shaving the aperture lever on our K-mounts?

One serious question, though: Do you use the front-cell focusing?
06-19-2012, 03:55 PM   #13
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QuoteOriginally posted by lytrytyr Quote
And we complain about Canonites shaving the aperture lever on our K-mounts?
The Ikonta folder was trashed. I didn't have to sacrifice it. I *will* admit to sacrificing an Ansco Speedex Special R 6x6 folder to get the Agfa Apotar 85/4.5 lens. So sue me.

QuoteQuote:
One serious question, though: Do you use the front-cell focusing?
Nope, I stick it on a focusing helicoid. Much easier.
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