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ZUFAR 4/350mm APO CAT lens
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PostPosted: Wed Jan 24, 2018 7:20 pm    Post subject: ZUFAR 4/350mm APO CAT lens Reply with quote

Was waiting over 10 years for such a lens to appear...

Was made for the Soviet MARS-5 mission to planet Mars using a very elaborate camera



with a 4/350mm catadioptric quartz fluorite lens [lens drawing made exclusively for me by my dear friend Marco Cavina]:



which delivered very sharp images of the Mars surface:



And here is the lens:



It was made of Quartz and Fluorite to be able to work in UV and visible light, 300-700nm without focus shift.
so actually it is an APO 350mm catadioptric lens. Their whole useful wavelength range is 230-700nm.

Data of this lens, as well as its normal quartz fluorite sister lenses are here:
http://www.macrolenses.de/ml_detail_sl.php?ObjektiveNr=323


Last edited by kds315* on Mon Feb 12, 2018 8:25 am; edited 3 times in total


PostPosted: Wed Jan 24, 2018 7:35 pm    Post subject: Reply with quote

WOW!!!
Like 1 Like 1 Like 1
Congrats! Impressive scarce lens! How many were made?
Waiting eagerly to see it at work.


PostPosted: Wed Jan 24, 2018 7:40 pm    Post subject: Reply with quote

dan_ wrote:
WOW!!!
Like 1 Like 1 Like 1
Congrats! Impressive scarce lens! How many were made?
Waiting eagerly to see it at work.


Thank you Dan, Guess only a handful were ever made.
Will have to make a suitable mount with my mechanic
once it is in my hands, than we'll see how it delivers...


PostPosted: Wed Jan 24, 2018 8:50 pm    Post subject: Reply with quote

Congrats
So you did buy it! Wink


PostPosted: Wed Jan 24, 2018 10:42 pm    Post subject: Reply with quote

Now this is a special find! Congratulations, both for the perseverance and finding it!

So in another 10 years we can see your pictures taken from Mars orbit? Very Happy


PostPosted: Thu Jan 25, 2018 12:10 am    Post subject: Reply with quote

Obviously not THE lens that went to Mars!

Congratulations! Sounds like a very useful lens for your work. Kind of narrow DOF however. Looking forward to seeing results.


PostPosted: Thu Jan 25, 2018 1:58 am    Post subject: Reply with quote

Interesting one! Congrats


PostPosted: Thu Jan 25, 2018 6:47 am    Post subject: Reply with quote

Thanks guys! I intend to use it for my multispectral work, especially also to simulated bird vision.
And the lens drawings were especially made for and donated to me by my dear friend Marco Cavina,
so I own all rights... Smile


PostPosted: Thu Jan 25, 2018 8:06 am    Post subject: Reply with quote

Thank You Dog

shouldn't the serial number be like "000005" instead of "370807"?


PostPosted: Thu Jan 25, 2018 8:20 am    Post subject: Reply with quote

kansalliskalaCafe wrote:
Thank You Dog

shouldn't the serial number be like "000005" instead of "370807"?


That serial number is a mistery to me as it contradicts any known numbering
scheme used in the former USSR! The Mars missions using that lens/camera
were done 1971-76, so that lens should be from that time...

Possibly they used a special numbering schemes for projects, as NASA also has done.


Last edited by kds315* on Thu Jan 25, 2018 3:29 pm; edited 1 time in total


PostPosted: Thu Jan 25, 2018 2:43 pm    Post subject: Reply with quote

Congratulations!

Post many samples!


PostPosted: Thu Jan 25, 2018 9:29 pm    Post subject: Reply with quote

Great find!

kds315* wrote:
kansalliskalaCafe wrote:
Thank You Dog

shouldn't the serial number be like "000005" instead of "370807"?


That serial number is a mistery to me as it contradicts any known numbering
scheme used in the former USSR! The Mars missions using that lens/camera
were done 1971-76, so that lens should be from that time...

Possibly they used a special numbering schemes for projects, as NASA also has done.


Most of the GOI prototypes I met don't use this 0000 numbering also. Since Volosov lead the conception of this set of lens, and since Volosov was working at GOI, I guess the GOI was behind the conception, so it's not that surprising to find such number.


PostPosted: Fri Jan 26, 2018 7:21 am    Post subject: Reply with quote

Whow, very special lens!
LEts hope the shipping goes well...


PostPosted: Mon Feb 12, 2018 8:23 am    Post subject: Reply with quote

Here it is my newest acquisition...



PostPosted: Mon Feb 12, 2018 9:13 am    Post subject: Reply with quote

Here a few freelensed test shots on a gloomy day...

About 100m away:


About 15m away:


Last edited by kds315* on Mon Feb 12, 2018 9:16 am; edited 1 time in total


PostPosted: Mon Feb 12, 2018 9:16 am    Post subject: Reply with quote

Very cool piece of history, I look forward to seeing what it can do in your hands, congrats.


PostPosted: Mon Feb 12, 2018 9:52 am    Post subject: Reply with quote

Lightshow wrote:
Very cool piece of history, I look forward to seeing what it can do in your hands, congrats.


Thank you, I will certainly be posting results here... Wink


PostPosted: Mon Feb 12, 2018 2:43 pm    Post subject: Reply with quote

Well, here the 1st reflected UV image I took with it... handheld freelensing, high ISO:



whitebalanced it looks like this:



PostPosted: Tue Feb 13, 2018 10:22 am    Post subject: Reply with quote

Trying to see how well it does closeups...

Here a Balinese Sandlewood carving against the light:





And here a detail of a Shona stone carving (very slanted angle to show DOF):



Both about 3 meters away


PostPosted: Tue Feb 13, 2018 11:07 am    Post subject: Reply with quote

And here a quite better focused image of my standard target, that golden ball at sunny weather:



PostPosted: Tue Feb 13, 2018 5:56 pm    Post subject: Reply with quote

Impressive bokey for a cata lens! Congrats ... where are the donuts?


PostPosted: Tue Feb 13, 2018 9:59 pm    Post subject: Reply with quote

The donuts come from specular highlights in OOF areas, without the highlights the bokeh just looks busy.
Looks like it's very sharp, should be a very useful tool.
I wonder how much magnification this lens is capable of while remaining sharp? I've never seen any macro shots from a Cat. now that I think of it.


PostPosted: Tue Feb 13, 2018 11:11 pm    Post subject: Reply with quote

kds315* wrote:
And here a quite better focused image of my standard target, that golden ball at sunny weather:



That golden ball looks quite 3D.
Hand held or tripod?


PostPosted: Tue Feb 13, 2018 11:50 pm    Post subject: Reply with quote

Lightshow wrote:
The donuts come from specular highlights in OOF areas, without the highlights the bokeh just looks busy.
Looks like it's very sharp, should be a very useful tool.
I wonder how much magnification this lens is capable of while remaining sharp? I've never seen any macro shots from a Cat. now that I think of it.


Yes, they are there, just not in my images I have showed.

Indeed, it seems to be a very sharp lens and yes, those lenses also work very well as "long distance microscopes", there have been very special ones, the Questar QM 100 comes to mind for instance http://www.company7.com/questar/microscope/qm100.html , here some docu about its capabilities: http://www.company7.com/library/questar/QM_100_30003c7.pdf


PostPosted: Tue Feb 13, 2018 11:52 pm    Post subject: Reply with quote

[quote="Himself"]
kds315* wrote:
And here a quite better focused image of my standard target, that golden ball at sunny weather:

That golden ball looks quite 3D.
Hand held or tripod?


Handheld but resting on some window ledge.