G lens capable - Improved version of the Nikon Mount for RED

[Dallas Zhen]

I have an idea and try to improving the capability of the Nikon Mount from RED.com

Because of the natural of Nikon G lens, there is no aperture ring, the aperture should/only be selected from camera body. In fact, I find there is a way to control the aperture from the G lens.

There a small pin on the lens mounts. It can control basic open and close the aperture.

 

[Dallas Zhen]

So I come up this design. It will be free of use for anyone with workmanship. I am taking no responsibility at those designs, or if it damage your camera.

AFS G lens has great optical quality. Also it comes great kit as well. The N (Nano Crystal Coat) are able to particularly effective in reducing ghost and flare peculiar to ultra-wide-angle lenses. (http://imaging.nikon.com/)
Eg: 14-24mm F2.8
24-70mm F2.8
70-200mm F2.8

For Marco:
60mm F2.8 Macro
105mm F2.8 Marco

 

[Dallas Zhen]

This design is base on the RED.com one. So there will have no risk for the Warranty.

 

[Brandon Fraley]

im confused about how you'd control aperture. can you explain?

 

[Dallas Zhen]

Which part are you confused? The lens or the pole(Yellow color)?

 

[jaadgy akanni]

The pole. Can you give us a more discernible drawing. I'm having a hard time visualizing how the aperture settings will be changed.

 

[Dallas Zhen]

The way it works just like old Canon FD or NIkon AIS lens mechanism, the pole has to assign to the nikon mount, when the aperture ring rotate, it working like a lever.

 

[Dallas Zhen]

Here is animated gif. hope it better explained the design.

 

[Russ Campbell]

This is the same principle being used for the Nikon G to Canon Eos adapter by 16-9.net. The current version requires you to turn the lens body to change the aperture, but he is working on a lever controlled version. It would really be great if this can be implemented on the RED Nikon mount.

 

[Dallas Zhen]

This is the same principle being used for the Nikon G to Canon Eos adapter by 16-9.net. The current version requires you to turn the lens body to change the aperture, but he is working on a lever controlled version. It would really be great if this can be implemented on the RED Nikon mount.

Do you mean the lever-operated version?? I don't think he is developing the adapter for RED one. that adapter is for EOS mount based camera. IF you want using that adapter on RED one, you have to install the Erik's EOS mount on your RED one first. Because there has no room for a Canon dumb mount.

AS Erik staged:

I am all for other solutions. But I should point out to people that this is physically impossible, without removing the collimation assembly. The facts...

52mm PL mount distance
-12mm of PL mount is removable, to front of collimation adapter
-----
40mm at front of collimation adapter
+2mm EF Bayonet thickness
-44mm EF mount Distance
-----
2mm between collimation adapter and bayonet

The screws that we use to attach the bayonets are longer than this, and this leaves no room for the locking pin mechanism. Conclusion that I draw is you can't do the mount without removing the collimation assembly. Give RED and Birger a few days to work things out.
__________________
Erik Widding
www.birger.com

Therefore, This is Nikon mount just for RED one. If Erik has worked out with RED company, it still a great alternative. Erik's EOS mount + 16-9 nikon adapter.

However, if some one just want using Nikon lens, the price to achive control G type lens is quite high (EOS Mount $1495 + Nikon adapter $300). It hard to get the best of both world.

Regards,
Dallas

 

[Russ Campbell]

My post refers to Nikon to Eos, but the lever principle to change aperture is similar to your proposal for the RED Nikon mount. I hope someone runs with your idea as the Birger mount seems to be a long way from reality with all the warranty issues now being mentioned.

 

[Michael Hastings]

... as the Birger mount seems to be a long way from reality with all the warranty issues now being mentioned.

Russ:

Give them a few days to sort it out, I think the warranty issues re: Birger are going to be resolved pretty quickly.

Regardless of mount - i.e. birger, RED Nikon or any other, you are going to have to be careful with the i/data connector. And possibly there may need to be some certification program for any device you plug into the front lens connector - which BTW has already been changed by Birger to the rear auxiliary power connector - so would only be an issue if and when RED implements the i/data and Erik wants to add that back via an accessory RS232 cable - but again it wouldn't be carrying power to the mount.

As far as delay, one of Erik's posts last week indicated it was an easy alteration and modified parts are already back from the machine shop and since the 4 pin lemo is a lot easier to solder than the 10 pin lemo, it may actually speed up production.

 

[Russ Campbell]

Hi Mike. The problem is that we all seem to have been waiting for a 'few days' for months now to get the Birger mount. I don't doubt that it will be a fantastic product when it finally arrives, but it might have to be adapted to work on the Epic by that time:waaa: I have to make a decision on glass now and Nikon seems to be the most viable option at present. Even the IMS mount is looking like more of a reality than the elusive Birger mount. I really wish that Eric could at least give everyone concrete and reliable delivery date projections. Last phone call a few months ago, I was told I am #97 and with the recent sales order, my confirmation number shows a 107.

 

[Erik Widding]

Even the IMS mount is looking like more of a reality than the elusive Birger mount. I really wish that Eric could at least give everyone concrete and reliable delivery date projections.

I think I need to be a little more blunt than I have been. After Jarred's comments on thursday (below) I will not give dates until I have sat down with Jarred and Stuart on Tuesday morning.

I just wanted to make sure everyone is aware of the warranty impacts that you may have when you start taking the camera apart. The camera warranty only covers mounts that do not involve taking off the adjustable back-focus ring.. if you go beyond that, the warranty is void, on any 3rd party product.

Any statements that P+S may have made regarding the warranty status of their mount is in direct contradiction with the above statement.

 

[Joe Vinson]

Last phone call a few months ago, I was told I am #97 and with the recent sales order, my confirmation number shows a 107.

The Birger confirmation number actually has no bearing on your place in line, as has been discussed a few times on the boards. (The 107, I think, refers to the month of November when you placed the order.)