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hoacker
![Level 1 Level 1](rating1.gif) Joined: 01 May 2011 Posts: 89 Location: Germany, S�dhessen
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Posted: Thu Apr 26, 2012 10:10 pm Post subject: Just converted to EOS: MC ROKKOR 1.2/58. Instant love... |
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hoacker wrote:
Hi there.
I just (almost) finished the conversion of an MC Rokkor 1.2/58 to EOS. I still have to grind down the retention ring to get (close to) infinity, but I was curious about the lens performing on my 5D. So I attached the lens to the cam and shot the conversion tools wide open close to minimum focus distance. Well, it looks quite unique to my eyes. While there is almost no DOF wide open at this distance the bokeh is the smoothest I've seen in my pictures so far. I'm quite impressed. I hope I can manage to get a well defined DOF next time I shoot the lens, maybe at the wedding in two days?
The pictures: Conversion tools and aluminium dust (wo gehobelt wird, fallen Späne), a crop of the alu dust and the lens itself....
![](http://forum.mflenses.com/userpix/20124/4226_img_4557_smaller_1.jpg) _________________ Holger
Cameras: Canon EOS 5D, 7D, 1000Da, M
Manual lenses: Zeiss Distagon 3,5/18 ZE, Nikon PC-Nikkor 28mm 1:3.5, Olympus OM 28 f/2,0, Zeiss Distagon 2/35 ZE, Leitz Summicron-R 1:2/50, Minolta MC ROKKOR 1:1.2 f=58mm (EOS-Mod), LZOS MC Jupiter-9 2/85, Meyer-Optik G�rlitz Trioplan 1:2.8/100 V (Exa), Zeiss Macro Planar 2/100 ZE, Nikon Nikkor-P.C Auto 1:2.5 f=105mm, Schneider-Kreuznach Componar 1:4,5/105, Porst Tele 1:1,8/135mm MC AUTO (M42), Cosina Auto Cosinon 135mm/2.8 (M42), Makinon MC 1:5.6 300mm Reflex, LZOS MTO 1000A 10,5/1100
AF lenses: Canon EF-S 17-55 f/2,8 IS USM, Canon EF-M 22mm 1:2 STM, Canon EF 40 f/2,8 STM, Canon EF-S 60 f/2,8 USM, Canon EF 200 1:2.8L II USM, Canon EF 500 f/4L IS USM, Canon Extender 1,4x III, Sigma 50-150/2,8 EX DC APO HSM II, Sigma 150 f/2,8 HSM, Sigma APO Tele Converter 1.4x EX DG, Sigma APO Tele Converter 2x EX DG, Kenko Extension Tubes
For sale (PM me): E.Zuiko Auto-T 1:3,5 f=100mm (Pen F), Zeiss Planar 85 f/1,4 (C/Y)
Some pictures at Flickr |
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Jesito
![Level 4 Level 4](rating4.gif) Joined: 24 Aug 2007 Posts: 5745 Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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Posted: Fri Apr 27, 2012 6:41 am Post subject: |
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Jesito wrote:
Nice!, thanks for sharing!
Have you taken pictures of the process?.
I got several Rokkors and maybe I would like to try to convert some...
Regards.
Jes. _________________ Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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hoacker
![Level 1 Level 1](rating1.gif) Joined: 01 May 2011 Posts: 89 Location: Germany, S�dhessen
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Posted: Fri Apr 27, 2012 7:21 am Post subject: |
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hoacker wrote:
Jesito wrote: |
Have you taken pictures of the process?.
I got several Rokkors and maybe I would like to try to convert some... ![Wink](images/smiles/icon_wink.gif) |
Didn't take pictures, but all you need for the conversion of the 1.2/58 is described here: http://www.cogitech.ca/Rokkor/index.html. The process itself took me about 2 1/2 hours, but still have to invest aome time on infinty.
Different Rokkors may require a different conversion process. _________________ Holger
Cameras: Canon EOS 5D, 7D, 1000Da, M
Manual lenses: Zeiss Distagon 3,5/18 ZE, Nikon PC-Nikkor 28mm 1:3.5, Olympus OM 28 f/2,0, Zeiss Distagon 2/35 ZE, Leitz Summicron-R 1:2/50, Minolta MC ROKKOR 1:1.2 f=58mm (EOS-Mod), LZOS MC Jupiter-9 2/85, Meyer-Optik G�rlitz Trioplan 1:2.8/100 V (Exa), Zeiss Macro Planar 2/100 ZE, Nikon Nikkor-P.C Auto 1:2.5 f=105mm, Schneider-Kreuznach Componar 1:4,5/105, Porst Tele 1:1,8/135mm MC AUTO (M42), Cosina Auto Cosinon 135mm/2.8 (M42), Makinon MC 1:5.6 300mm Reflex, LZOS MTO 1000A 10,5/1100
AF lenses: Canon EF-S 17-55 f/2,8 IS USM, Canon EF-M 22mm 1:2 STM, Canon EF 40 f/2,8 STM, Canon EF-S 60 f/2,8 USM, Canon EF 200 1:2.8L II USM, Canon EF 500 f/4L IS USM, Canon Extender 1,4x III, Sigma 50-150/2,8 EX DC APO HSM II, Sigma 150 f/2,8 HSM, Sigma APO Tele Converter 1.4x EX DG, Sigma APO Tele Converter 2x EX DG, Kenko Extension Tubes
For sale (PM me): E.Zuiko Auto-T 1:3,5 f=100mm (Pen F), Zeiss Planar 85 f/1,4 (C/Y)
Some pictures at Flickr |
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AhamB
![Level 3 Level 3](rating3.gif) Joined: 22 Jun 2008 Posts: 733 Location: Germany
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Posted: Fri Apr 27, 2012 8:14 am Post subject: |
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AhamB wrote:
I don't really understand why people are still doing destructive/non-reversible Rokkor conversions for Canon when there are mount replacement kits available from Leitax and this guy http://www.jimbuchananspace.com/Camera_Services.html (I believe there is even a third source). |
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hoacker
![Level 1 Level 1](rating1.gif) Joined: 01 May 2011 Posts: 89 Location: Germany, S�dhessen
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Posted: Fri Apr 27, 2012 8:42 am Post subject: |
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hoacker wrote:
AhamB wrote: |
I don't really understand why people are still doing destructive/non-reversible Rokkor conversions for Canon when there are mount replacement kits available. |
Not everybody has to understand everything, I myself don't undstand many things other people are doing. Well, such is life... ![Wink](images/smiles/icon_wink.gif) _________________ Holger
Cameras: Canon EOS 5D, 7D, 1000Da, M
Manual lenses: Zeiss Distagon 3,5/18 ZE, Nikon PC-Nikkor 28mm 1:3.5, Olympus OM 28 f/2,0, Zeiss Distagon 2/35 ZE, Leitz Summicron-R 1:2/50, Minolta MC ROKKOR 1:1.2 f=58mm (EOS-Mod), LZOS MC Jupiter-9 2/85, Meyer-Optik G�rlitz Trioplan 1:2.8/100 V (Exa), Zeiss Macro Planar 2/100 ZE, Nikon Nikkor-P.C Auto 1:2.5 f=105mm, Schneider-Kreuznach Componar 1:4,5/105, Porst Tele 1:1,8/135mm MC AUTO (M42), Cosina Auto Cosinon 135mm/2.8 (M42), Makinon MC 1:5.6 300mm Reflex, LZOS MTO 1000A 10,5/1100
AF lenses: Canon EF-S 17-55 f/2,8 IS USM, Canon EF-M 22mm 1:2 STM, Canon EF 40 f/2,8 STM, Canon EF-S 60 f/2,8 USM, Canon EF 200 1:2.8L II USM, Canon EF 500 f/4L IS USM, Canon Extender 1,4x III, Sigma 50-150/2,8 EX DC APO HSM II, Sigma 150 f/2,8 HSM, Sigma APO Tele Converter 1.4x EX DG, Sigma APO Tele Converter 2x EX DG, Kenko Extension Tubes
For sale (PM me): E.Zuiko Auto-T 1:3,5 f=100mm (Pen F), Zeiss Planar 85 f/1,4 (C/Y)
Some pictures at Flickr |
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Tervueren
![Level 3 Level 3](rating3.gif) Joined: 18 May 2011 Posts: 1177 Location: West Sussex, United Kingdom
Expire: 2014-11-08
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Posted: Fri Apr 27, 2012 9:05 am Post subject: |
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Tervueren wrote:
No need to destroy, you can adjust infinity by removing the outer ring which will expose 4 screws, just loosen them and adjust focus ring in req'd direction and re-tighten. |
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Arkku
![Level 3 Level 3](rating3.gif) Joined: 28 Feb 2007 Posts: 1416 Location: Helsinki, Finland
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Posted: Fri Apr 27, 2012 11:43 am Post subject: |
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Arkku wrote:
Jesito wrote: |
Have you taken pictures of the process?.
I got several Rokkors and maybe I would like to try to convert some... |
I made a guide for converting the Rokkor 58mm f/1.2 back in 2007. It's pictured for Sony Alpha, but the same process can be used for Canon as well, and indeed requires less adjustment due to shorter register of EOS vs Alpha. I recommend my guide over the one previously linked, not just for self-promotion but because the other guide advises to sand down the mount unnecessarily, which is both needlessly destructive and also introduces risk of uneven sanding, which could cause tilt.
(Note: After I made my guide, many people have informed me that there is a simpler way to adjust infinity focus on the lens than the one I used, so one may wish to look into that as well. I haven't tried it myself, since this lens now has essentially perfect infinity focus position—calibrated on stars at f/1.2—so I don't want to mess it up. =)
(Note 2: Turns out that the Rokkor 58mm f/1.2 is perhaps the easiest Rokkor to convert. Most others are considerably more difficult.)
AhamB wrote: |
I don't really understand why people are still doing destructive/non-reversible Rokkor conversions for Canon |
It is possible to convert this lens reversibly as well, I really don't know why the guy chooses to sand down the old mount when there is easily enough adjustment room to get infinity focus even on Sony/Minolta AF without this. (My conversion linked above does not alter the thickness of original parts; a small rim is removed in the process but its function on the lens is cosmetic so original settings can be restored.)
That said, mount replacements may indeed be a good option for the f/1.2 Rokkors nowadays… Back when I did mine I was able to buy the lens on eBay for under €100 so the cost of a replacement mount would have been fairly high compared to the price of the lens, now it's different. Still, there is a certain appeal to doing these conversions rather than just buying more stuff, but for me that applies mostly when I convert a new lens that no guide exists for, it's like puzzle then.
Last edited by Arkku on Fri Apr 27, 2012 2:59 pm; edited 5 times in total |
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Lightshow
![Level 4 Level 4](rating4.gif) Joined: 04 Nov 2011 Posts: 3666 Location: Calgary
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Posted: Fri Apr 27, 2012 12:17 pm Post subject: |
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Lightshow wrote:
Welcome to the club, I love my Rokk's when we start to see FF mirrorless cameras, we will see less destructive mods being done.
I had the problem of deciding if I should have conversions done to match my MC PG 58/1.2 or keep them(HH 35/1.8, QF 50/3.5 macro) stock, in the end I decided to keep them stock and just use them on NEX-7 for now. _________________ A Manual Focus Junky...
One photographers junk lens is an artists favorite tool.
My lens list
http://www.flickr.com/photos/lightshow-photography/ |
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Aanything
![Level 3 Level 3](rating3.gif) Joined: 27 Aug 2011 Posts: 2187 Location: Piacenza, Italy
Expire: 2014-05-30
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Posted: Fri Apr 27, 2012 2:47 pm Post subject: |
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Aanything wrote:
Does anyone know if is a conversion like this possible for a minolta MC Rokkor PG 50/1.4?
It is probably my favourite lens, and I'd like to use it on my sony without either losing infinity focus or putting extra glass between the lens and the sensor.
I found some that brutally cut off the mount, but I'd prefer not going so hard on the lens (I have other 50/1.4's, so I'd like to convert it, but not at the cost of butchering the lens), and I tried to do it myself, but I can't find how to actually remove the mount.
EDIT:
a conversion like this = similar to arkku's on the 58/1.2 _________________ C&C and editing of my pics are always welcome
Samples from my lenses
My gear
My Flickr |
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Jesito
![Level 4 Level 4](rating4.gif) Joined: 24 Aug 2007 Posts: 5745 Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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Posted: Sat Apr 28, 2012 6:12 am Post subject: |
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Jesito wrote:
Thanks Hoacker and Arkku for the pointers and the information.
And yes, I do prefer to avoid destructive conversions.
I used a Leitax kit in the past to convert a Planar to Pentax-k, with excellent results at reasonable price, but sometimes, if the lens has some damage on the mount, a destructive conversion can be fun...
Regards.
Jes. _________________ Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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