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Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.

Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.
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Mini-Cyclop - T3C-2
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Posted: Thu May 17, 2012 3:52 pm
Post subject: Mini-Cyclop - T3C-2
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Posted: Thu May 17, 2012 3:52 pm
Post subject: Mini-Cyclop - T3C-2
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Different from the 85mm f1.5, here's the little brother : the T3C-2.

It seems to be a 100mm f2 (constant, no aperure ring, only focus ring). Only information that I've found was here : http://pentaxslr.eu/Forums/viewtopic/t=76/

Here's mine, in mint condition :







Some samples :





















I think I know why the focus field is curve when ring is set to the closest focus distance. In that state, the front barrel is a little loose and thus, front lense is not perfectly alligned with rear one.


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Posted: Thu May 17, 2012 5:23 pm
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Posted: Thu May 17, 2012 5:23 pm
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Wow, it looks very good.
The barrel though is a bit dull Very Happy


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Posted: Thu May 17, 2012 5:26 pm
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Posted: Thu May 17, 2012 5:26 pm
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Also, the samples from the thread you've linked show an amazing dof curvature, wow.


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Posted: Sun May 27, 2012 3:12 pm
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Posted: Sun May 27, 2012 3:12 pm
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Portrait test :





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Posted: Sun May 27, 2012 3:21 pm
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Posted: Sun May 27, 2012 3:21 pm
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How would you compare it to your Kalienar/Kalejnar 100 wide open?


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Posted: Sun May 27, 2012 5:20 pm
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Posted: Sun May 27, 2012 5:20 pm
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Hmm, it renders like a Sonnar type. Nice performance, shame it has no aperture.


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Posted: Sun May 27, 2012 5:22 pm
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Posted: Sun May 27, 2012 5:22 pm
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Apertures are different. Kaleinar is f2.8 and the "apparently" Helios 100mm is a constant f2.
Wide open, the Kaleinar is sharper but lacks of contrast. I would say that they are good but different.
DOF curvature seems to be fun with the Helios but I can't test that for now (won't focus to infinity with my Nikon).

I will try to shoot same subject with both and convert RAW to JPEG without post-processing.


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Posted: Mon May 28, 2012 7:56 am
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Posted: Mon May 28, 2012 7:56 am
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another feedback
http://www.pentaxuser.co.uk/forum/topic/the-ten-quid-lens-thread--23401/p-3#comm271270


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Posted: Sun Jun 03, 2012 9:57 pm
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Posted: Sun Jun 03, 2012 9:57 pm
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These can be found on american eBay for not so cheap prices. They are called "russian night vision" and they seem to come attached to an handgrip of some sort.


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Posted: Fri Jun 08, 2012 6:06 pm
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Posted: Fri Jun 08, 2012 6:06 pm
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Crop is not my taste (cat legs are cut)


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Posted: Fri Jun 08, 2012 8:02 pm
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Posted: Fri Jun 08, 2012 8:02 pm
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A pity, but still a nice effect, great bokeh too.


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Posted: Fri Jun 08, 2012 8:54 pm
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Posted: Fri Jun 08, 2012 8:54 pm
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Ghost2501 wrote:


Crop is not my taste (cat legs are cut)

Lovely picture, very nice rendering from this lens.


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Posted: Sat Jun 09, 2012 11:58 am
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Posted: Sat Jun 09, 2012 11:58 am
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Meanwhile, i was surfing on an italian site for used stuff and i spotted a night vision device with what seemed quite an exotic lens on it.
Luckily, the seller has photographed the paper that reports the technical data of the lens.
http://www.subito.it/sport/visore-notturno-asti-37511594.htm
I don't know if the lens is fixed or it can be screwed off, i asked the seller.
100mm f/1.5 looks interesting though.


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Posted: Sat Jun 09, 2012 1:03 pm
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Posted: Sat Jun 09, 2012 1:03 pm
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It is a bit risky, and for that kind of money you can get 90% of some of the most sought after manual focus lenses out there and you know they will work properly on your camera (mount wise) and have that handy thing called "aperture blades" Laughing


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Posted: Sat Jun 09, 2012 1:05 pm
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Posted: Sat Jun 09, 2012 1:05 pm
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And what about the lens of the thread?
How much would you pay for one?


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Posted: Sat Jun 09, 2012 1:31 pm
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Posted: Sat Jun 09, 2012 1:31 pm
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20-30eu as it's interesting but with no aperture it's not that useful, so for me, worth less than a decent 100mm lens.


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Posted: Sun Sep 16, 2012 4:46 pm
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Posted: Sun Sep 16, 2012 4:46 pm
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got it, here are some quick samples from the balcony


shoot from raw
PP (lightroom): contrast + 25, blacks - 30, custom wb, selective sharpening 35

crop 100%




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Posted: Sun Oct 14, 2012 8:17 pm
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Posted: Sun Oct 14, 2012 8:17 pm
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I have found this info:
http://www.npzoptics.com/catalog/night_optics/
where you can see the newer version of it, called "TZS-4".
The producer is Novosibirsk Instrument-Making Plant and the lens is indeed a 100mm f2.

Lens design would be interesting (elements/groups).


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Posted: Thu Nov 22, 2012 9:50 pm
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Posted: Thu Nov 22, 2012 9:50 pm
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got also this lens few months ago for 10€, it's definitely fun to use especially for the price Smile ...
few quick samples with this lens on D700:
1/

2/

3/

4/

5/view of my garden where you can see the crazy dof curvature!

6/

7/ and with Nex 5n:


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Posted: Thu Nov 22, 2012 11:35 pm
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Posted: Thu Nov 22, 2012 11:35 pm
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I'd buy one as well for 10 euros, even for 20 probably.
Its bokeh is so unnatural that looks like it has been processed in post production.
Nice rendering though.


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Posted: Fri Nov 23, 2012 12:39 am
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Posted: Fri Nov 23, 2012 12:39 am
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Very impressive, I'd certainly use one. Cool


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Posted: Fri Nov 23, 2012 3:31 pm
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Posted: Fri Nov 23, 2012 3:31 pm
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I like this lens from what I've seen here. It seems to have a greater depth of field than the Cyclop resulting from the smaller aperture and despite the longer focal length. Some of the photos have a good 3D appearance. How and where can I find one?


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Posted: Sat Nov 24, 2012 10:15 pm
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Posted: Sat Nov 24, 2012 10:15 pm
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Ahemm.


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Posted: Sun Nov 25, 2012 7:05 am
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Posted: Sun Nov 25, 2012 7:05 am
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is this an unlabelled version of another 100mm f2 russian lens?

-Ben


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Posted: Tue Nov 27, 2012 9:55 pm
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Posted: Tue Nov 27, 2012 9:55 pm
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woodrim wrote:
...How and where can I find one?

If you search on ebay, probably you have to search for "night vision T3C-2" , here is one: http://www.ebay.de/itm/Nachtsichtgerat-T3C-2-3fach-Vergroserung-1-Generation-/190748795004?pt=Jagen&hash=item2c6983a07c but not the cheapest price.....
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