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Layer-cake
Joined: 18 Mar 2013 Posts: 560 Location: Cape Town
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Posted: Thu Jun 23, 2016 2:04 pm Post subject: Samoca 38.5mm F1.0 D mount lens converted to MFT |
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Layer-cake wrote:
I came across a rather interesting lens a couple of weeks ago, a Samoca 1.1/2inch F1.0 D mount lens. I've done a couple of conversions to D mount lenses before to C mount, normally 1/12" almost covers a MFT sensor with some crazy swirl in the corners.
On this one the helicoid barrel was too big to try and squeeze it into a C mount base so I used a MFT C Mount adapter. The helicoid was frozen solid so into the oven it went upto 160C' before it would budge (I did worry about the lenses shattering if the body didn't expand enough, but everything turned out fine)
To my surprise the rear element was huge in comparison to other D mount lenses, my friend with a lathe removed the excess from the base of the lens and the adapter.
The conversion came out OK and the images won't any awards in sharpness, but it is quite a fun lens to play with, The field curvature is crazy and with a bit of work done on the rear retainer ring the image circle almost covers the A6000 sensor which is a bit crazy for a D mount. I think they might have wanted to make it a C mount lens but with the curvature I reckon they scrapped the idea.
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I'll load some images of the pictures once I have had a chance to play around with it a bit more
Last edited by Layer-cake on Thu Jun 23, 2016 2:15 pm; edited 1 time in total |
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calvin83
Joined: 12 Apr 2009 Posts: 7547 Location: Hong Kong
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Posted: Thu Jun 23, 2016 2:15 pm Post subject: |
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calvin83 wrote:
Well done! Look forward to your photos. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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Layer-cake
Joined: 18 Mar 2013 Posts: 560 Location: Cape Town
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Posted: Thu Jun 23, 2016 3:23 pm Post subject: |
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Layer-cake wrote:
Thanks Calvin,
I need to get used to the curvature and somehow use that, but so far the images of our new cat have turned out ok.. |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Thu Jun 23, 2016 7:24 pm Post subject: |
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kds315* wrote:
so do I! _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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Nordentro
Joined: 24 Jun 2010 Posts: 4710 Location: Lillehammer, Norway
Expire: 2015-01-29
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Posted: Fri Jun 24, 2016 10:48 am Post subject: |
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Nordentro wrote:
Congrats, this is a lens usually seen in C-mount
Klaus has it too, but I do not think he "coupled"
It can be found as Carl Meyer Videostigmat 38mm f/1 and Soligor Elitar 38mm f/1
What did you pay for it? _________________ Lars | Lens collection | Manuellfokus.no |
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Layer-cake
Joined: 18 Mar 2013 Posts: 560 Location: Cape Town
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Posted: Fri Jun 24, 2016 11:52 am Post subject: |
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Layer-cake wrote:
Ooo you are right, searching under the samoca brand didn't bring anything up for it and all I could find was the rexar D mount lens with the same spec but not the same body
Here is a thread Klaus did a couple of years back, the lens itself has the very same heavy field curvature
http://forum.mflenses.com/carl-meyer-videostigmat-f1-0-1-5-38mm-t32564.html
I got very lucky by the looks of things
Last edited by Layer-cake on Tue Sep 06, 2016 9:14 am; edited 1 time in total |
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Nordentro
Joined: 24 Jun 2010 Posts: 4710 Location: Lillehammer, Norway
Expire: 2015-01-29
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Posted: Fri Jun 24, 2016 3:14 pm Post subject: |
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Nordentro wrote:
Layer-cake wrote: |
Ooo you are right, searching under the samoca brand didn't bring anything up for it and all I could find was the rexar D mount lens with the same spec but not the same body
Here is a thread Klaus did a couple of years back, the lens itself has the very same heavy field curvature
http://forum.mflenses.com/carl-meyer-videostigmat-f1-0-1-5-38mm-t32564.html
I got very lucky by the looks of things, bought this for about $20 |
This lens sells for $500 in C-mount
Do the serial have a "K" prefix on your lens? _________________ Lars | Lens collection | Manuellfokus.no |
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Layer-cake
Joined: 18 Mar 2013 Posts: 560 Location: Cape Town
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Posted: Mon Jun 27, 2016 10:32 am Post subject: |
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Layer-cake wrote:
I saw that, it almost makes me a bit sad as I am quite strict on myself for what I can keep price wise......I justified keeping a exacta mount Trioplan recently as the mount type here in SA is not desirable and it had some heavy scratches on the front but such is life. |
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Nordentro
Joined: 24 Jun 2010 Posts: 4710 Location: Lillehammer, Norway
Expire: 2015-01-29
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Posted: Mon Jun 27, 2016 11:13 am Post subject: |
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Nordentro wrote:
, any serial info? _________________ Lars | Lens collection | Manuellfokus.no |
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