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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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 Posted: Sun Feb 19, 2012 7:57 pm Post subject: Minolta MC Rokkor-PG 1:1.2 f=58mm |
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Kathmandu wrote:
Mount conversion to M42 done (reversible) via fabricated M42 mount bought from Pete Ganzel. The switching of mount was fast, and easy . A very well made mount.
Image of lens with M42 mount:
with M42 to Sony/Minolta AF mount;
Lens bought through local newspaper advertisement, hood from Keh Camera.
Some images taken @ f1.2 on an overcast day ,dull day.
Images @ f1.2 taken indoors in available light
taken @f1.2 with a 60W lamp ceiling lamp and available light from window.
Adios Muchachos 
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kathmandu
Sony α 700 DSLR
Last edited by Kathmandu on Sun Feb 19, 2012 9:07 pm; edited 1 time in total |
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aspen
Joined: 15 Dec 2010
Posts: 307
Location: Maryland, USA
Expire: 2014-02-20
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| Posted: Sun Feb 19, 2012 8:26 pm Post subject: |
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aspen wrote:
Wow! Exquisite. I love the bokeh, and colors.
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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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Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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| Posted: Sun Feb 19, 2012 8:32 pm Post subject: |
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Jesito wrote:
Well done!. Results are really promising...
Would you mean that there is a M42 direct replacement for the Rokkor-X lenses to turn them into M42?
Could you please post more details?. I own a nice 50mm f/1.7 Rokkor-X that I like very much and could be a nice improvement to have it converted to M42 permanently.
Thanks in advance.
Jes.
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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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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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| Posted: Sun Feb 19, 2012 9:47 pm Post subject: |
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Kathmandu wrote:
| aspen wrote: |
| Wow! Exquisite. I love the bokeh, and colors. |
Thank you
| Quote: |
Well done!. Results are really promising...
Would you mean that there is a M42 direct replacement for the Rokkor-X lenses to turn them into M42?
Could you please post more details?. I own a nice 50mm f/1.7 Rokkor-X that I like very much and could be a nice improvement to have it converted to M42 permanently.
Thanks in advance.
Jes. |
Thank you Jes.
This is the MC Rokkor nor Rokkor-X. I have not opened up the Rokkor-X before so I dont know if they share similar insides. I have seen images of one converted 45mm f2 Rokkor-X on his PAGE -converted to Sony Alpha.
To answer the main part of your question- Yes I bought a kit from Pete of a fabricated (modified M42 Mount) that replaces the Rokkor mount on this lens. Its a matter of unscrewing 4 screws , and removing the old mount . The M42 has been machined so the thickness and circumference of the M42 mount has been resized to fit in the place of the old mount. He provides you shims for the mount so you can adjust the lens for infinity.
On this Rokkor- the aperture coupling tang had to be sanded down or clipped a little bit so it dod not get stuck on the secondary adapter (which in my case was the M42 to Sony Alpha), so as the aperture ring moves smoothly. . This is because the M42 registration distance is approx 1.5mm less than the MD/MC mount , and will have a second adapter (the M42 to Sony AF) on it. An alternative I could have shaved around the circumference of the secondary adapter( the M42/ Sony AF) to make room for the menttioned aperture ring tang ,without having to clip or shave it down.
Pete explains all of this very well in the instruction sheet he provides with his kit.
The only other mount I have seen made that I like better , is one fabricated /machined (CNC)out of an aluminum block. There probably are other cheaper/cruder alternatives -like mounting a M42/Sony AF adapter directly with some shims underneath .. again this is in the case of adapting it to Sony Alpha mount directly. These work well too if you're limited with what you have , as an alternative and you may need to open up the lens to compensate/adjust for infinity elsewhere.
I hope this helps in some way. I cannot say much about your particular lens since I have not opened the back myself.
Much regards
BTW- Nice hat Jes-is that some kind of fur?
_________________
kathmandu
Sony α 700 DSLR
Last edited by Kathmandu on Sun Feb 19, 2012 10:01 pm; edited 2 times in total |
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Sun Feb 19, 2012 9:55 pm Post subject: |
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Attila wrote:
Great lens, congrats!!
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-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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| Posted: Sun Feb 19, 2012 9:58 pm Post subject: |
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Kathmandu wrote:
| Attila wrote: |
| Great lens, congrats!! |
Thank you Attila- very kind of you.
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kathmandu
Sony α 700 DSLR
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Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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| Posted: Sun Feb 19, 2012 10:07 pm Post subject: |
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Jesito wrote:
| Kathmandu wrote: |
Thank you Jes.
This is the MC Rokkor nor Rokkor-X. I have not opened up the Rokkor-X before so I dont know if they share similar insides. I have seen images of one converted 45mm f2 Rokkor-X on his PAGE -converted to Sony Alpha.
To answer the main part of your question- Yes I bought a kit from Pete of a fabricated (modified M42 Mount) that replaces the Rokkor mount on this lens. Its a matter of unscrewing 4 screws , and removing the old mount . The M42 has been machined so the thickness and circumference of the M42 mount has been resized to fit in the place of the old mount. He provides you shims for the mount so you can adjust the lens for infinity.
On this Rokkor- the aperture coupling tang had to be sanded down or clipped a little bit so it dod not get stuck on the secondary adapter (which in my case was the M42 to Sony Alpha), so as the aperture ring moves smoothly. . This is because the M42 registration distance is approx 1.5mm less than the MD/MC mount , and will have a second adapter (the M42 to Sony AF) on it. An alternative I could have shaved around the circumference of the secondary adapter( the M42/ Sony AF) to make room for the menttioned aperture ring tang ,without having to clip or shave it down.
Pete explains all of this very well in the instruction sheet he provides with his kit.
The only other mount I have seen made that I like better , is one fabricated /machined (CNC)out of an aluminum block. There probably are other cheaper/cruder alternatives -like mounting a M42/Sony AF adapter directly with some shims underneath .. again this is in the case of adapting it to Sony Alpha mount directly. These work well too if you're limited with what you have , as an alternative and you may need to open up the lens to compensate/adjust for infinity elsewhere.
I hope this helps in some way. I cannot say much about your particular lens since I have not opened the back myself.
Much regards
BTW- Nice hat Jes-is that some kind of fur? |
Thanks for such a long explanation. It's clear to me now 
Regarding the hat is my wolf-hat for extreme cold  . This year we're suffering tempeeratures below 0ºC that is quite unusual here, so we had to upgrade ourselves to a new clothing fot the situation.
As soon as the weather improves, I'll be taking it off.
Again, thanks!.
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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walter g
Joined: 20 Feb 2010
Posts: 2463
Location: NC, USA
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| Posted: Sun Feb 19, 2012 10:37 pm Post subject: |
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walter g wrote:
| Jesito wrote: |
Well done!. Results are really promising...
Would you mean that there is a M42 direct replacement for the Rokkor-X lenses to turn them into M42?
Could you please post more details?. I own a nice 50mm f/1.7 Rokkor-X that I like very much and could be a nice improvement to have it converted to M42 permanently.
Thanks in advance.
Jes. |
I don't think this would be an easy lens to convert, because the mount screws are in the side not the bottom of the lens.
_________________
Main cameras
Panasonic G5,Nikon J1,Pentax Q10,Sony Nex 6
Minolta MC W SI 2.5/28, MD 2.8/28, MC W SG 3.5/28, MC Celtic 3.5/28, MC W HG 2.8/35, MD Celtic 2.8/35, QE 4/35, Rokkor X 2/45, MC Rokkor X PG 1.4/50, MC Rokkor X PG 1.7/50, MD Rokkor X 1.7/50, MD 2/50, MC Rokkor PF 1.7/55, MC Rokkor PF 1.9/55, Auto Tele Rokkor PG 2.8/135, MC Tele Rokkor QD 3.5/135, TC 4/135, MC Celtic 4/200, MC Tele Rokkor PE 4.5/200
MD 28-70 f3.5-4.8, MD Macro 35-70 f3.5, Md 70-210 f4, MD Rokkor X 75-200 f4.5, MD 100-200 f5.6
Nikon Nikkor 4/20, O Auto 2/35, S Auto 1.4/50..... Miranda Auto 2.8/28, Auto 2.8/35, Auto 1.4/50, Auto EC 1.4/50, Auto 1.8/50, Auto EC 1.8/50,Auto 1.9/50, Auto 3.5/135
Various Soligor,Sun,Fujita,Komura,Spitatone, etc. Lenses
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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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| Posted: Mon Feb 20, 2012 1:08 am Post subject: |
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Kathmandu wrote:
| walter g wrote: |
| Jesito wrote: |
Well done!. Results are really promising...
Would you mean that there is a M42 direct replacement for the Rokkor-X lenses to turn them into M42?
Could you please post more details?. I own a nice 50mm f/1.7 Rokkor-X that I like very much and could be a nice improvement to have it converted to M42 permanently.
Thanks in advance.
Jes. |
I don't think this would be an easy lens to convert, because the mount screws are in the side not the bottom of the lens. |
This one has screws . 
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kathmandu
Sony α 700 DSLR
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walter g
Joined: 20 Feb 2010
Posts: 2463
Location: NC, USA
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| Posted: Mon Feb 20, 2012 2:48 am Post subject: |
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walter g wrote:
Good point. There are atleast 3 Rokkor X 50 1.7 lenses. The MD version with bottom mount screws and the MC Rokkor X version with side mount screws.
_________________
Main cameras
Panasonic G5,Nikon J1,Pentax Q10,Sony Nex 6
Minolta MC W SI 2.5/28, MD 2.8/28, MC W SG 3.5/28, MC Celtic 3.5/28, MC W HG 2.8/35, MD Celtic 2.8/35, QE 4/35, Rokkor X 2/45, MC Rokkor X PG 1.4/50, MC Rokkor X PG 1.7/50, MD Rokkor X 1.7/50, MD 2/50, MC Rokkor PF 1.7/55, MC Rokkor PF 1.9/55, Auto Tele Rokkor PG 2.8/135, MC Tele Rokkor QD 3.5/135, TC 4/135, MC Celtic 4/200, MC Tele Rokkor PE 4.5/200
MD 28-70 f3.5-4.8, MD Macro 35-70 f3.5, Md 70-210 f4, MD Rokkor X 75-200 f4.5, MD 100-200 f5.6
Nikon Nikkor 4/20, O Auto 2/35, S Auto 1.4/50..... Miranda Auto 2.8/28, Auto 2.8/35, Auto 1.4/50, Auto EC 1.4/50, Auto 1.8/50, Auto EC 1.8/50,Auto 1.9/50, Auto 3.5/135
Various Soligor,Sun,Fujita,Komura,Spitatone, etc. Lenses
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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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| Posted: Sat Feb 25, 2012 12:56 am Post subject: |
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Kathmandu wrote:
Few more taken @ 1.2 and f2.
Cheers
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kathmandu
Sony α 700 DSLR
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