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dan_
Joined: 05 Dec 2012
Posts: 1058
Location: Romania
Expire: 2016-12-19
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 Posted: Mon Feb 11, 2013 6:32 am Post subject: Lomo OKC 70 mm f/1.8 Russian projection lens |
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dan_ wrote:
Hello to everyone,
I've just got this lens from eBay:
http://www.ebay.com/itm/160871211521?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
to try it on my Nex-7. It will take some one more week till it arrives from Russia.
Till then I am wondering if someone has any experience with it as a taking lens. Any information is welcome. |
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rawhead
Joined: 09 Feb 2009
Posts: 1525
Location: Boston, MA
Expire: 2014-04-29
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| Posted: Mon Feb 11, 2013 6:57 am Post subject: |
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rawhead wrote:
Would you mind sharing what the Best Offer price was? I see he has many more… 
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Sony α7R, Pentax 67II, Kiev-60, Hasselblad 203FE, 903SWC, Graflex Norita 66, Mamiya M645 1000s, Burke & James 8x10, Graflex Pacemaker Speed Graphic (4x5 and 3x4), Century Graphic (2x3), R.B. Graflex Seried D, Rolleiflex SL66E, Rolleiflex 2.8C Xenotar, Mamiya C330f, a few M42, six P6, three OM, four Hasselblad, two Pentax 67, two Mamiya 645, one Noritar, and a sprinkle of EF. Oh, and an Aero Ektar and Leica Noctilux |
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dan_
Joined: 05 Dec 2012
Posts: 1058
Location: Romania
Expire: 2016-12-19
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| Posted: Mon Feb 11, 2013 7:02 am Post subject: |
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dan_ wrote:
It was 80$, free shipping. |
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rawhead
Joined: 09 Feb 2009
Posts: 1525
Location: Boston, MA
Expire: 2014-04-29
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| Posted: Mon Feb 11, 2013 7:04 am Post subject: |
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rawhead wrote:
Thx, good to know. It would be nice if any of the focal lengths (nearly) covers 6x6; then I can mount it on my Rolleiflex SL66E which has a bellows focus system.
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Sony α7R, Pentax 67II, Kiev-60, Hasselblad 203FE, 903SWC, Graflex Norita 66, Mamiya M645 1000s, Burke & James 8x10, Graflex Pacemaker Speed Graphic (4x5 and 3x4), Century Graphic (2x3), R.B. Graflex Seried D, Rolleiflex SL66E, Rolleiflex 2.8C Xenotar, Mamiya C330f, a few M42, six P6, three OM, four Hasselblad, two Pentax 67, two Mamiya 645, one Noritar, and a sprinkle of EF. Oh, and an Aero Ektar and Leica Noctilux |
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Fabian
Joined: 04 Dec 2011
Posts: 254
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| Posted: Mon Feb 11, 2013 1:38 pm Post subject: |
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Fabian wrote:
Mentioned those some time ago, they don't seem to get sold fast.
I was intrigued by the glass but found them too expensive to just try out without built in aperture and focus control.
Very interesting to see your results. |
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Lloydy
Joined: 02 Sep 2009
Posts: 7796
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Mon Feb 11, 2013 4:08 pm Post subject: |
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Lloydy wrote:
Sony NEX5 & Zeiss Ikon Orikar lens by Mudplugga, on Flickr
This is a Zeiss Ikon Orikar 150 / 3.2 projector lens with no aperture or focus, I make the apertures from cardboard and cut a hole in the middle, I've experimented with holes from 5 mm to 20 mm and obviously get the same results as a lens with an iris. Luckily the Zeiss lens has a 52 mm thread so I use a reversing ring to fit it on the bellows for focusing, and it works superbly. I've had some good pictures from it.
_________________
LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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dan_
Joined: 05 Dec 2012
Posts: 1058
Location: Romania
Expire: 2016-12-19
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| Posted: Fri Mar 15, 2013 1:54 pm Post subject: |
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dan_ wrote:
I thought that my lens got lost on shipping but, surprisingly, it finally arrived today.
At first look it seems to be a very similar Petzval design with the KO-120/2.1 presented here:
http://forum.mflenses.com/mysterious-projection-lens-ko-120-on-g1-t57120.html
First impresion is positive, it seems to be quite sharp at f/1.8, with very nice bokeh and color but very shallow DOF, just like the KO-120/2.1 mentioned above. But that 's only what I could see with it provisionally tape-mounted.
In the next days I'll make it a proper mount and I'll post some tests.
rawhead - unfortunately it has a short register distance, probably 52.43 mm. as the KO-120/2.1, and it can't focus infinity on your SL66E. But is enough for a proper mount (with focusing helicoid) on a NEX. |
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dan_
Joined: 05 Dec 2012
Posts: 1058
Location: Romania
Expire: 2016-12-19
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| Posted: Fri Mar 15, 2013 7:05 pm Post subject: |
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dan_ wrote:
Till then 2 in-house quick and boring sharpness tests on NEX-7 with the lens tape -mounted.
No PP, just in-camera jpg.
1- wide opened at f/1.8
100% center detail
2- With a front-mounted cardboard opening of between f/2.8 - f/4
100% center detail
100% up - right detail
100% down - left detail
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aspen
Joined: 15 Dec 2010
Posts: 307
Location: Maryland, USA
Expire: 2014-02-20
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| Posted: Sat Mar 16, 2013 11:27 pm Post subject: |
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aspen wrote:
very impressive. 
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Cameras; Sony Nex5n Lenses; Konica Hexanons; 21mm f2.8, 40mm f1,8, 50mm f1.4, 50mmf1.7,57mm f1.4, 100mm f2.8, 135mm f3.2, 200mm f4, MC Helios 77M-4 50mm f1.8, Jupiter 8 50 f2, Super Takumar 85mm f1.9, Vivitar Series 1 90mm f2.5 (Macro), Steinheil Munchen Culminar 85mm f2.8, Steinheil Munchen Exagon 35mm f2.8, Jupiter 37A 135mm, Astra Berlin 135mm f3.5, Angenieux 180mm f4 , Tair 3-PhS 300mm f4.5 |
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dan_
Joined: 05 Dec 2012
Posts: 1058
Location: Romania
Expire: 2016-12-19
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| Posted: Sun Mar 17, 2013 4:32 pm Post subject: |
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dan_ wrote:
| aspen wrote: |
| very impressive. |
So far it impressed me too.
And another on-window infinity test in a dull day, with the lens tape-mounted and a cardboard opening of 30 mm. This is approximately f/2.3. At this opening it shows a slightly magenta cast in the central area which is all gone by f/3.
I didn't expect the projection lens to behave well at infinity, but it surprised me.
Please note the enormous depth of field at f/2.3 from this angle. Probably this is due to the fact that the focusing plane is in fact spherical, like in those Minolta lenses with Variable Field Curvature on which you could change the DOF without changing the f-stop..
At f/2.3:
100% center
100% left-down
100% wright-up
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martinsmith99
Joined: 31 Aug 2008
Posts: 6950
Location: S Glos, UK
Expire: 2013-11-18
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| Posted: Sun Mar 17, 2013 6:03 pm Post subject: |
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martinsmith99 wrote:
CA is probably its downfall, but if this vanishes at workable apertures then it's fairly decent..
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Casual attendance these days |
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dan_
Joined: 05 Dec 2012
Posts: 1058
Location: Romania
Expire: 2016-12-19
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| Posted: Mon Mar 18, 2013 3:59 pm Post subject: |
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dan_ wrote:
I've dismantled the lens today and it is not a Petzval type, it looks like a Double-Gauss type design very similar to the Pancolar 80mm/f1.8. |
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