John Inglis
Member
The metabones Contax G adapter to Sony Nex is beautiful, but heavier then the Kipon, and with different issues. At first I did not mount it right on account of the issue mentioned on the youtube video:
http://www.youtube.com/watch?v=WsFeKqYVI_8&feature=related
The GetDPI M43 discussion by Jonas hits the nail on the head concerning my difficulty of locking the Contax G on the Metabones adapter with the Contax G locking ring.
http://forums.getdpi.com/...d.php?p=240264&highlight=metabones#post240264
Below is Jonas's description of how to mount a Contax G lens on a Metabones adapter and when this is complete, both on the camera. The second paragraph of step 4 is where I had difficulty. It takes a good turn of the Contax G lens locking ring in order for the little metal bar to move over the right place and from where one can then lock the Metabones adapter so that the lens does not fall off. From the camera side of the adapter you can see the small indentation in which this little metal piece needs to hang before locking the adapter, which moves it into the slot. The youtube on this issue linked above shows this view.
While I find it easier to mount a Contax G lens on the Kipon adapter (when I make no mistake) I find focusing easier on the Metabones adapter on account of the wider ring. The lens also seems to wiggle less on my Metabones adapter, but this might vary from adapter to adapter. The Metabones is a keeper.
John
Here are the instructions from Jonas linked above:
Hi,
It's not a lens problem and it is not an adapter problem (from a technical point of view). Then again, it is an adapter problem as mounting and un-mounting the lens and adapter isn't very intuitive and basically this is an user error as you didn't get it right...
English is not my strong side, nor is peadagogics but I can try.
1: Make sure your lens is unmounted correctly. You can't open the aperture blades all the way up and the aperture scale is seemingly un-aligned.
2: face the lens downwards
3: Have a look at the adapter from the camera's angle of view. There is a sliding switch which should be positioned to the right in the unlocked position.
Now look at the lens and the adapter and find the correct way to align them.
4: Here you may have to align the adapter focusing drive tip with the lid on the lens' focusing screw. Then push the lens and the adapter towards each other (the same way you mount the G lens to a G camera or any other adapter) without turning anything. Turn the knurled, or grooved, ring just in front of the adapter focusing ring only (meaning you should try not to touch any other ring or part of the lens barrel) to the right seen from the front of the lens. That is the lens "mounting ring" and a special for these G lenses.
When turning the mounting ring some power is needed. It is a tight fit and you turn the lens mounting ring until the whole thing clicks in place. The click comes from the adapter locking pin falling into place, a small lid, to the lens. You can see this happen from the adapter side.
5: Now again look at the adapter mount surface (the side mounting to the camera) and push the sliding lever to the left locking the lens to the adapter.
6: You should now be able to turn the aperture ring and see the aperture blades open and close corresponding to the marks on the lens.
7: Mount the lens/adapter to the camera. When locked to the camera the lens will now align correctly with the aperture index mark facing straight upwards. Done.
regards,
Jonas
........
JMiro also has helpful things to say on the Sony Nex DPreview forum:
http://forums.dpreview.com/forums/readflat.asp?forum=1042&thread=36913824
http://www.youtube.com/watch?v=WsFeKqYVI_8&feature=related
The GetDPI M43 discussion by Jonas hits the nail on the head concerning my difficulty of locking the Contax G on the Metabones adapter with the Contax G locking ring.
http://forums.getdpi.com/...d.php?p=240264&highlight=metabones#post240264
Below is Jonas's description of how to mount a Contax G lens on a Metabones adapter and when this is complete, both on the camera. The second paragraph of step 4 is where I had difficulty. It takes a good turn of the Contax G lens locking ring in order for the little metal bar to move over the right place and from where one can then lock the Metabones adapter so that the lens does not fall off. From the camera side of the adapter you can see the small indentation in which this little metal piece needs to hang before locking the adapter, which moves it into the slot. The youtube on this issue linked above shows this view.
While I find it easier to mount a Contax G lens on the Kipon adapter (when I make no mistake) I find focusing easier on the Metabones adapter on account of the wider ring. The lens also seems to wiggle less on my Metabones adapter, but this might vary from adapter to adapter. The Metabones is a keeper.
John
Here are the instructions from Jonas linked above:
Hi,
It's not a lens problem and it is not an adapter problem (from a technical point of view). Then again, it is an adapter problem as mounting and un-mounting the lens and adapter isn't very intuitive and basically this is an user error as you didn't get it right...
English is not my strong side, nor is peadagogics but I can try.
1: Make sure your lens is unmounted correctly. You can't open the aperture blades all the way up and the aperture scale is seemingly un-aligned.
2: face the lens downwards
3: Have a look at the adapter from the camera's angle of view. There is a sliding switch which should be positioned to the right in the unlocked position.
Now look at the lens and the adapter and find the correct way to align them.
4: Here you may have to align the adapter focusing drive tip with the lid on the lens' focusing screw. Then push the lens and the adapter towards each other (the same way you mount the G lens to a G camera or any other adapter) without turning anything. Turn the knurled, or grooved, ring just in front of the adapter focusing ring only (meaning you should try not to touch any other ring or part of the lens barrel) to the right seen from the front of the lens. That is the lens "mounting ring" and a special for these G lenses.
When turning the mounting ring some power is needed. It is a tight fit and you turn the lens mounting ring until the whole thing clicks in place. The click comes from the adapter locking pin falling into place, a small lid, to the lens. You can see this happen from the adapter side.
5: Now again look at the adapter mount surface (the side mounting to the camera) and push the sliding lever to the left locking the lens to the adapter.
6: You should now be able to turn the aperture ring and see the aperture blades open and close corresponding to the marks on the lens.
7: Mount the lens/adapter to the camera. When locked to the camera the lens will now align correctly with the aperture index mark facing straight upwards. Done.
regards,
Jonas
........
JMiro also has helpful things to say on the Sony Nex DPreview forum:
http://forums.dpreview.com/forums/readflat.asp?forum=1042&thread=36913824