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motleypixel
Joined: 12 May 2010
Posts: 135
Location: Austin, TX USA
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 Posted: Sun Sep 12, 2010 1:43 pm Post subject: MD Rokkor-X 50/1.4 conversion to EOS with video |
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motleypixel wrote:
As suggested by a member to post here:
Minolta MD Rokkor-X 50mm f/1.4 conversion to Canon EOS
Folks this is a 24 minute video, so if you want see full detail on how this conversion is done, then go grab a drink  I'm pretty sure this is the most detailed-documented procedure on how to convert a Minolta MD lens to Canon EOS. It is of my opinion that the best Minolta SR mount 50mm primes were the MD Rokkor-X 50/1.2 and 50/1.4. By this time in Minolta's manual SLR lens development they had figured out the best coatings, saved some weight and size, and engineered their best aperture diaphragm (hence MD for Minimum Diaphragm). This lens is Minolta's second gen. MD lens. The last and 3rd generation were perhaps just a good optically, but they builds were of more plastic.
Minolta MD Rokkor-X 50mm f/1.4 conversion to Canon EOS
Sample photos will only be posted HERE
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Gothic_Snake
Joined: 19 Mar 2012
Posts: 66
Location: Almaty, Kazakstan
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| Posted: Thu Jun 12, 2014 6:52 am Post subject: |
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Gothic_Snake wrote:
Converted older version of Rokkor.
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SLR:Canon: 5D II; Canon 450D; Zenit TTL; Canon 500N; Pentax SPII; Zenit 122;
A lot of lenses..
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philslizzy
Joined: 07 Aug 2012
Posts: 4744
Location: Cheshire, England
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| Posted: Thu Jun 12, 2014 9:56 am Post subject: |
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philslizzy wrote:
Nice well made video. I think he would have fewer problems with the adapter if he used a 49mm reversing ring rather than an M42 adapter.
Destructive adapting a lens like this is unnecessary if you buy one of these and adjust infinity as he shows on the video... Click here to see on Ebay
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motleypixel
Joined: 12 May 2010
Posts: 135
Location: Austin, TX USA
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| Posted: Thu Jun 12, 2014 1:49 pm Post subject: |
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motleypixel wrote:
It's true...non-destructive is best; however reading details on this adapter it states: and with 50mm lenses on full frame camera such as 5D, focus distance is about 5-6 meters
Well, my way actually provides infinity focus at f/8. Wide open I can't get infinity but I can get close...maybe 15 meters.
-Roy
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Gothic_Snake
Joined: 19 Mar 2012
Posts: 66
Location: Almaty, Kazakstan
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| Posted: Thu Jun 12, 2014 4:31 pm Post subject: |
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Gothic_Snake wrote:
| motleypixel wrote: |
Well, my way actually provides infinity focus at f/8. Wide open I can't get infinity but I can get close...maybe 15 meters.
-Roy |
Your way provide infinity at wide open)) Need to cut little bit more to get infinity.
I have converted the same way:
50 1.4 x2 (all the same as in my photo)
58 1.4 x3
50 1.7 x 3 (different barrels)
MD 50 1.7 (mostly plastic)
MD 135 3.5
135 2.8 (old barrel)
non minolta, but MD
Wep Auto 135 2.8
Vivitar Series 1 135 2.1
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SLR:Canon: 5D II; Canon 450D; Zenit TTL; Canon 500N; Pentax SPII; Zenit 122;
A lot of lenses..
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motleypixel
Joined: 12 May 2010
Posts: 135
Location: Austin, TX USA
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| Posted: Thu Jun 12, 2014 5:03 pm Post subject: |
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motleypixel wrote:
| Gothic_Snake wrote: |
| motleypixel wrote: |
Well, my way actually provides infinity focus at f/8. Wide open I can't get infinity but I can get close...maybe 15 meters.
-Roy |
Your way provide infinity at wide open)) Need to cut little bit more to get infinity.
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Not just cut but also extreme infinity focus adjustment as well. I not only cut mount area but also the rear elements housing. When testing I had mirror collision so I slightly adjusted infinity focus just until mirror clears. FYI, on FF sensor (5D MkII)
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philslizzy
Joined: 07 Aug 2012
Posts: 4744
Location: Cheshire, England
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| Posted: Thu Jun 12, 2014 10:03 pm Post subject: |
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philslizzy wrote:
| motleypixel wrote: |
It's true...non-destructive is best; however reading details on this adapter it states: and with 50mm lenses on full frame camera such as 5D, focus distance is about 5-6 meters
Well, my way actually provides infinity focus at f/8. Wide open I can't get infinity but I can get close...maybe 15 meters.
-Roy |
This is correct but with the infinity adjustment you do anyway it ought to work. I'm not suggesting its an equivalent alternative.
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Gothic_Snake
Joined: 19 Mar 2012
Posts: 66
Location: Almaty, Kazakstan
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| Posted: Fri Jun 13, 2014 1:53 am Post subject: |
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Gothic_Snake wrote:
| motleypixel wrote: |
Not just cut but also extreme infinity focus adjustment as well. I not only cut mount area but also the rear elements housing. When testing I had mirror collision so I slightly adjusted infinity focus just until mirror clears. FYI, on FF sensor (5D MkII) |
I have 5dII and know about mirror problems. In first lenses i grind rear element housing, but in last not. cause i don't shot this lens at infinity so no reason for me. Thanks for advice anyway!)
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SLR:Canon: 5D II; Canon 450D; Zenit TTL; Canon 500N; Pentax SPII; Zenit 122;
A lot of lenses..
http://ctor-dev.ru/ |
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