Non Sigma lenses for the SD-14

Hi

I have tried to make a diagram of the available lens options for the SD14, has taken some months to finish.
I am very interested in comments, as I do want it to be as correct as possible.
Is it possible to understand? Useful? Accurate?

The idea is that you start with a lens on the left, and follow the lines through the adaptors. Different colors in lens/mount indicate a mount replace.
The line colors indicate what kount you end up with.
Sigma SA - green lines. (I might change this color; a bit difficult to see)
Canon EF - red lines.
Nikon F - yellow lines.
Leica R - grey lines.

M42 has blue lines up to the M42 adaptor where the lines go to SA, EF or Nikon F.



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Kind regards
Øyvind
My best images:
http://foto.nordjylland.biz/porta/Portfolio/Best/album/index.html
http://www.pbase.com/norwegianviking/sd14
http://www.norwegianviking.smugmug.com
http://www.pbase.com/norwegianviking
SD14 Compendium:
http://www.foto.nordjylland.biz/SD14/SD-usertips.htm
SD15 Specs and more:
http://foto.nordjylland.biz/SD15/SD-15-specs.htm

Great job you have done. Then you next level of difficulty is to find those lenses which will not hit the IR filter. Anyway, anyone interested in Sigma digital cameras will be impressed by the large numbers of other brand lenses that can be mounted with/without adapters on the Sigma digital camera.

Timberwolfpuppy said:

Great job you have done.

Click to expand...

Thanks.

Timberwolfpuppy said:

Then you next level of difficulty is to
find those lenses which will not hit the IR filter.

Click to expand...

Yes, I write a few lines about that in the text I refer to at the bottom of the picture. I hope to someday have a extensive list under each manufactorer, telling which lens that can be used and not.

Timberwolfpuppy said:

Anyway, anyone
interested in Sigma digital cameras will be impressed by the large
numbers of other brand lenses that can be mounted with/without
adapters on the Sigma digital camera.

Click to expand...

Yes, I was amazed by the options.

--
Kind regards
Øyvind
My best images:
http://foto.nordjylland.biz/porta/Portfolio/Best/album/index.html
http://www.pbase.com/norwegianviking/sd14
http://www.norwegianviking.smugmug.com
http://www.pbase.com/norwegianviking
SD14 Compendium:
http://www.foto.nordjylland.biz/SD14/SD-usertips.htm
SD15 Specs and more:
http://foto.nordjylland.biz/SD15/SD-15-specs.htm

in my OP that dotted lines indicate theoretical possibilities, not yet verified.

(As a matter of fact, not all solid lines represent verified info either, but hopefully they will.)

--
Kind regards
Øyvind
My best images:
http://foto.nordjylland.biz/porta/Portfolio/Best/album/index.html
http://www.pbase.com/norwegianviking/sd14
http://www.norwegianviking.smugmug.com
http://www.pbase.com/norwegianviking
SD14 Compendium:
http://www.foto.nordjylland.biz/SD14/SD-usertips.htm
SD15 Specs and more:
http://foto.nordjylland.biz/SD15/SD-15-specs.htm

yvind Strm said:

Hi

I have tried to make a diagram of the available lens options for the
SD14, has taken some months to finish.

Click to expand...

I'm sorry Yvind but I think your diagram is far too complicated and a simple text list of the options would be much easier to understand by everyone...However, I'll try to help you with your existing diagram.

No mods are required on M645 lenses to SA mount BTW as an M645-SA adapter is easy to make from an M645 Number One Extension ring.
Its very likely similar adapters can be made for other medium format lenses.

Many Leica R lenses have produding rear parts that could make them unusable on the SA mount at infinity, even with Luis G's camera mount adapter....If these parts can be unscrewed and removed then it should be possible to convert Leica R lenses to SA, PK or M42 so they can be used on the SA mount at infinity...In any case, a "mod required" should be manditory for them.

Leica M lenses are for rangefinders only and have very short registration distances making them unusable on DSLR's so they should'nt even be included really.
Same goes for Olympus 4/3rds lenses.

Pentacon 6 (P6) Kiev-C can all be used on the SA mount via a P6-M42 adapter (which usually comes with such lenses when you buy them) and an M42-SA adapter.

There should be a "mod required for infinity" on Nikon F lenses...But only on the SD14, SD15...Most Nikon F lenses will fit and focus to infinity on the SD9 and SD10 via the JTAT Nikon-SA adapter.
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DSG
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http://sigmasd10.fotopic.net/

Alf

Thanks for your comments.

Leica M was included because there are one example of a working conversion.

Interesting what you wrrite about Leica R and of the medium format options.

--
Kind regards
Øyvind
My best images:
http://foto.nordjylland.biz/porta/Portfolio/Best/album/index.html
http://www.pbase.com/norwegianviking/sd14
http://www.norwegianviking.smugmug.com
http://www.pbase.com/norwegianviking
SD14 Compendium:
http://www.foto.nordjylland.biz/SD14/SD-usertips.htm
SD15 Specs and more:
http://foto.nordjylland.biz/SD15/SD-15-specs.htm

It's an impressive piece of work you have compiled there, no doubt about that. Very usefull for us Sigmaphiles, as is your order work. Thank you for the time and energy you are willing to spend on this!

--
There's no problem so big that you can't run away from it!

Thank you, Ringwraith.

Ringwraith69 said:

It's an impressive piece of work you have compiled there, no doubt
about that. Very usefull for us Sigmaphiles, as is your order work.
Thank you for the time and energy you are willing to spend on this!

--
There's no problem so big that you can't run away from it!

Click to expand...

--
Kind regards
Øyvind
My best images:
http://foto.nordjylland.biz/porta/Portfolio/Best/album/index.html
http://www.pbase.com/norwegianviking/sd14
http://www.norwegianviking.smugmug.com
http://www.pbase.com/norwegianviking
SD14 Compendium:
http://www.foto.nordjylland.biz/SD14/SD-usertips.htm
SD15 Specs and more:
http://foto.nordjylland.biz/SD15/SD-15-specs.htm

I have sawed off some exakta to M42 length, then epoxied an M39-toM42 bushing to the exakta stub.

http://www.pbase.com/recbo/zeiss



The fat 75/1.5 biotar in exakta are easiest because they focus to infinity with no grinding(except cut exakta flange shorter to clear M42-to-SA block). 1930's and 1951 require a little more work, but nothing like the hack jobs which are out there. I have a 1951 on the dining room table right now, and it just took a little filing on a brass tab to reach infinity. No need to mill off the silver finish on the mount surface, just trim the other end of the can 0.75mm where it does not show.

For me the bottleneck to Zeiss Contax and Zuiko conversions to Sigma SA is trial-fitting screwheads a hundred times, drill and test fit. It should be possible to adjust the countersink bit depth by registering it in a block of metal, then drill right the first time.

I think most people are waiting for somebody to be their third-party conversion specialist. I am a pioneer not a mechanic, so I would not be able to make many.

If anybody wants to try CZ Distagon T* 28/2.8, CZ Planar T* 85/1.4, or CZ Sonnar T* 180/2.8 in Sigma mount, and help to make a case for conversions and for Sigma cameras, I could sell one of any of those. Alf DaSigmaGuy does not want to be your conversion specialist, nor do I, but I could put at least one copy of those lenses in your hands to help get the ball rolling.

Recently I had to make cone-point slot-head set screws to replace 4 on CZJ biotars. I got it down to 15 minutes each with drill press chuck and dremel tool and xacto razor saw, but I still can't dis-assemble and clean, or rebuild diaphragms.

-Bob Dodds

Lots of work there.

I went through an infatuation period when I had to convert everything to Sigma. Then I admitted that it would be best for all concerned to convert anything to M42 that would fit into that narrow hole. There's no harm in benefitting from M42 resale value.

Feel free to prove Sigma mount on the same lens fetches more on ebay. I could sell you CZ 28/2.8, 85/1.4, 180/2.8 right now in Sigma mount, but I expect I would hear "$200". M42 would be $300-$800.

People often butcher Exakta to reach M42 ffl. It's better to mod the end of the can than mill the silver finish off of the mount surface. As I said earlier, some exaktas are really easy to take to M42. I should probably put set screws through the M39-to-M42 ring, but I am using some with only epoxy.

OnlyRealPixel said:

I have sawed off some exakta to M42 length, then epoxied an M39-toM42
bushing to the exakta stub.

http://www.pbase.com/recbo/zeiss

Click to expand...

Shame its got fungus on the rear element.
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DSG
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http://sigmasd10.fotopic.net/

What looks like fungus? Multi-coating is messed up, probably by rain and spit. Anything hazy looking is probably coating or oil haze on outer surface.

There is a little haze around the edge of front of rear array. Front air gap has a lot of haze. I don't know how to open the thing up, though biotars are simple. I tried a rubber stopper to twist the name ring but it doesn't move. No spanner slots.

Test:

http://www.pbase.com/recbo/image/107315282

yvind is really putting detailed feedback from people into his database.

Here is some detail. I have been able to adapt a 1951+ czj biotar 75/1.5 from exakta to M42, without milling the mount surface, but something binds a little on focusing. I got it to focus to infinity by grinding or filing on the stop tab on the rear can, the edge of the black ring(not certain that is needed), the ledge inside the rear can where the helical might bottom out(not certain that is needed). I am not skilled enough to take the helical all apart and grind on the FRONT of one of those helical ring layers where I think the binding(tightness) is.

The ww2 era fat biotars all adjust to M42 when adapted from Exakta or machines like copiers and medical machines. ww2's have glass within 200K of 1951+, and only the 1930's has glass 2000K different--critical to custom white balance but then it works.

Hi, I guess, I will go the other way, alter a SD14 to Exakta, maybe cheaper than messing all thie classic Exakta lenses by adapting them to SA or M42.

Already altered my 2nd SD14 to Leica R, thanks to Luis' adapter and I discovered a whole new world of details and sharpness, I never expected to see!

Maybe I will alter one to Exakta, too, as I have a few nice lenses in this mount.

Greetings
Klaus
--
http://www.pbase.com/exaklaus/london
http://submit.shutterstock.com/?ref=98001

That's a good idea, Klaus.

Hi Klaus

Do you have any example pics of Leica vs the best of your other lenses, both on an SD14? (of course ideally same subject and conditios yadda yadda but that might be asking a bit much ) I've been pondering picking up a Leica mount kit for future use but not sure whether the improvement justifies it for anything other than the most exacting professional use.

Thanks!

David

Filmophile said:

Hi Klaus

Do you have any example pics of Leica vs the best of your other
lenses, both on an SD14? (of course ideally same subject and
conditios yadda yadda but that might be asking a bit much ) I've
been pondering picking up a Leica mount kit for future use but not
sure whether the improvement justifies it for anything other than the
most exacting professional use.

Thanks!

David

Click to expand...

David, this is difficult, as I've parted from my 15-30, 28-70 and 50mm already. I had the Summilux 1,4/50 converted to SA and made comparisions this summer with diaphragm open. The Summilux looked softer than the Sigma. But upon closer inspection, one could see more details in the softness (1:1,4!) where the Sigma showed just harsh edges and less details. I know, everybody loves this 50mm EX lens, but I've never been a real friend of the 50 EX and I had two of them during the years. First one was sold after several thousands of shots (just Ebay pictures) because it started squiking like a dead-beaten pig and the second one just because I could makes me love this pictures from this lens.

Klaus

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http://www.pbase.com/exaklaus/london
http://submit.shutterstock.com/?ref=98001

a circuit board. What happens when you plug it in to your computer?

Lot of work there, Øyvind! Suggestion, though, the teal/cyan lines are hard to follow... maybe a color with a little more contrast to the grey background?

tjh
--
'Time flies like an arrow, fruit flies like a banana.' - Groucho Marx