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Jupiter 8s on NEX, red line 110deg to right
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PostPosted: Wed Mar 05, 2014 6:04 pm    Post subject: Jupiter 8s on NEX, red line 110deg to right Reply with quote

Hello,

The topic might be a bit confusing, but what I would like to ask is if you have a Jupiter 8 + adapter or some other L39 mount lens + adapter on a NEX. I have two Jupiter 8s, one from the fifties and one from the seventies, together with a Kiwi brand adapter.

The lenses focus at infinity properly and do not go beyond. The "red line" on a lens is usually on top when on a camera, so that you can see where you are focusing by looking down on the lens. Aperture might be rather visible too. In this case the red line is approx 110 degress counterclockwise(to the right when looking at the lens and camera from above) so you have to turn the camera to see the current aperture and focus range.

I tried googling images of this combo but the results appeared inconclusive.

What say you?


PostPosted: Wed Mar 05, 2014 6:19 pm    Post subject: Reply with quote

My L39-nex adapter consists of two rings: the inner (threaded) one is locked to the other by three screws. Loosening the screws would allow the inner ring to rotate, so you can mount the lens on the free ring, put it in the other ring in the correct position and tighten the screws again. Obviously you have to be sure you Will be able to lock the inner ring perfectly flat and at the same distance from the sensor as it was before rotating.
Or -since it is working ok for the important things- you can just leave it like it is now, and get used to that.


PostPosted: Wed Mar 05, 2014 6:37 pm    Post subject: Reply with quote

Thanks for your advice.

My Kiwi adapter has three screw holes, but what's in them does not look like normal screws.

I was thinking of getting a Snapshot Skopar 25 / 4 and, well, if I did and it too sat turned to the right I'd also get another adapter.

The Kiwi icon on the adapter lines up perfectly at the top of the camera.


PostPosted: Wed Mar 05, 2014 9:13 pm    Post subject: Reply with quote

There is a "noname chinese" adapter available on internet which works perfectly and has an adjustable ring .
You just need an Allen key. You cannot miss this cheap adapter : it has a black and white striped connection ring on the Nex side of the mount.


PostPosted: Wed Mar 05, 2014 10:37 pm    Post subject: Reply with quote

I have a few that have no adjustment, now I only buy the type that memetph recommends and can adjust the position of the lens.


PostPosted: Thu Mar 06, 2014 12:57 am    Post subject: Reply with quote

Väsen wrote:
Thanks for your advice.

My Kiwi adapter has three screw holes, but what's in them does not look like normal screws.

I was thinking of getting a Snapshot Skopar 25 / 4 and, well, if I did and it too sat turned to the right I'd also get another adapter.

The Kiwi icon on the adapter lines up perfectly at the top of the camera.

Probably a hex head grub screw, buy another adapter for the odd threaded lenses so you don't have to keep changing the "clocking".


PostPosted: Thu Mar 06, 2014 6:55 am    Post subject: Reply with quote

memetph wrote:
There is a "noname chinese" adapter available on internet which works perfectly and has an adjustable ring .
You just need an Allen key. You cannot miss this cheap adapter : it has a black and white striped connection ring on the Nex side of the mount.


Cheers for the advice. The are a few variants that look like that, http://www.ebay.co.uk/itm/Leica-M39-Screw-Mount-Lens-to-Sony-E-mount-NEX-Adapter-NEX-3-5-5N-C3-F3-7-A7-A7R-/231100428082?pt=UK_Photography_CameraLenses_Lens_caps_hoods_adaptors_ET&hash=item35cea8af32

as well as http://www.ebay.co.uk/itm/Leica-M39-Mount-to-NEX-E-Adapter-for-NEX-3-NEX-5-/121105618869?pt=UK_Photography_CameraLenses_Lens_caps_hoods_adaptors_ET&hash=item1c327517b5

for instance.

It is conceivable that Lightshow is right and that my Kiwi adapter has a 'grub' screw with a hex head. I'll acquire a set of Allen/hex keys and see. I had best get at least one other adapter too.. perhaps one of the ones listed above then.


PostPosted: Thu Mar 06, 2014 11:04 am    Post subject: Reply with quote

I use this adapter.. works perfect and looks great with a silver lens:

Click here to see on Ebay


PostPosted: Thu Mar 06, 2014 3:34 pm    Post subject: Reply with quote

The adapters that have an adjustable ring usually have the hex key with them.


PostPosted: Thu Mar 06, 2014 5:59 pm    Post subject: Reply with quote

Tedat: Thanks for the advice. I'll see if I can find one of those in Europe.

Philslizzy : Aha. This one didn't but I bought a set and the smallest one got those little grubs out and the Jupiters (well, the black one, the silver is a little better optically but as soon as it sits on an adapter the focus becomes so stiff I screw it loose from the adapter when attempting to focus) is now a little more user friendly.

I have a Skopar 25 on the way and hah, on one image on its auction page it's mounted with an adapter on a digital camera and the "red line" sure isn't where it's supposed to be.

So I'm happy you guys made me realize this could be fixed.