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cledry
Joined: 22 Dec 2008
Posts: 142
Location: Orlando, FL USA
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 Posted: Wed Mar 11, 2009 6:32 pm Post subject: Konica 40mm/1.8 pancake |
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cledry wrote:
Just finished up a 40mm pancake for a friend, using one of the brass spacer rings.
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Wed Mar 11, 2009 8:13 pm Post subject: |
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Attila wrote:
Looks great !
_________________
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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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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
Expire: 2015-01-22
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| Posted: Wed Mar 11, 2009 8:24 pm Post subject: |
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nemesis101 wrote:
You are most talented.. I have lots of Konica lenses and a Panasonic L-1 (hint, hint, hint...)
lol
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Lenses and cameras:
Amateurs worry about equipment
Pros worry about money,
Masters worry about light. |
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cledry
Joined: 22 Dec 2008
Posts: 142
Location: Orlando, FL USA
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| Posted: Wed Mar 11, 2009 10:03 pm Post subject: |
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cledry wrote:
| nemesis101 wrote: |
You are most talented.. I have lots of Konica lenses and a Panasonic L-1 (hint, hint, hint...)
lol
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It is ever so simple. If you look at the 3 lugs on the lens you will see that the one with the notch has been cut down. This is so that it will enter the 4/3 mount with that lug at about 2 o'clock. In line with the notch is the lock pin hole in the spacer. The only other thing is to cut or file a notch for the aperture tab. making sure to be accurate in one direction so that it cannot go into AE. Just screw down and if needed thin the spacer a bit.
You really do not need to diassemble the lens at all (although I do to keep filing dust out of the lens). |
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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
Expire: 2015-01-22
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| Posted: Thu Mar 12, 2009 12:02 am Post subject: |
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nemesis101 wrote:
Ok.. Now I am really confused!
The only other thing is to cut or file a notch for the aperture tab. making sure to be accurate in one direction so that it cannot go into AE. Just screw down and if needed thin the spacer a bit.
Not sure what the bit about 'in one direction' and 'going into AE' mean?
Doug
| cledry wrote: |
| nemesis101 wrote: |
You are most talented.. I have lots of Konica lenses and a Panasonic L-1 (hint, hint, hint...)
lol
|
It is ever so simple. If you look at the 3 lugs on the lens you will see that the one with the notch has been cut down. This is so that it will enter the 4/3 mount with that lug at about 2 o'clock. In line with the notch is the lock pin hole in the spacer. The only other thing is to cut or file a notch for the aperture tab. making sure to be accurate in one direction so that it cannot go into AE. Just screw down and if needed thin the spacer a bit.
You really do not need to diassemble the lens at all (although I do to keep filing dust out of the lens). |
_________________
Lenses and cameras:
Amateurs worry about equipment
Pros worry about money,
Masters worry about light. |
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cledry
Joined: 22 Dec 2008
Posts: 142
Location: Orlando, FL USA
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| Posted: Thu Mar 12, 2009 12:36 am Post subject: |
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cledry wrote:
If you look at the brass ring in the photo there is a notch cut in the outer diameter. In this notch moves a little tab as you turn the aperture ring. Since the lens by design has an AE or EE setting which is useless on the converted lenses, we do not want the ring to turn far enough to enter this position. So by cutting the notch slightly shorter than full travel we can prevent the tab on the aperture ring traveling far enough. |
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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
Expire: 2015-01-22
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| Posted: Thu Mar 12, 2009 2:33 am Post subject: |
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nemesis101 wrote:
Aha,
Now I begin to see...
Age has caught up with my mentational processes!
Doug.
| cledry wrote: |
| If you look at the brass ring in the photo there is a notch cut in the outer diameter. In this notch moves a little tab as you turn the aperture ring. Since the lens by design has an AE or EE setting which is useless on the converted lenses, we do not want the ring to turn far enough to enter this position. So by cutting the notch slightly shorter than full travel we can prevent the tab on the aperture ring traveling far enough. |
_________________
Lenses and cameras:
Amateurs worry about equipment
Pros worry about money,
Masters worry about light. |
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cledry
Joined: 22 Dec 2008
Posts: 142
Location: Orlando, FL USA
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| Posted: Mon Mar 16, 2009 3:40 am Post subject: |
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cledry wrote:
I hope to soon be ordering more rings, so if interested let me know. I probably won't have enough demand to order a third batch. Some who purchased rings the first time are on for more so that means they must be happy with the rings.
I think I might also off the rings ready to mount, with everything cut and drilled. I just purchased a tiny high speed precision drill press, so will have to pay for it somehow. 
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cledry
Joined: 22 Dec 2008
Posts: 142
Location: Orlando, FL USA
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| Posted: Wed Apr 15, 2009 1:46 am Post subject: |
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cledry wrote:
Just received another batch of brass rings, if interested.
www.belerionbooks.com/konica.htm |
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