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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Birger Lens Mount & Follow Focus

AquaVideoRed206 said:
Erik: does that accessory bus allow use of switches/pots to control iris and focus or is it an RS 232 port and I need to get to work on my controller board or better still is there or could you put another lemo on your off camera controller that would parallel the switches/pots or whatever.

All I am trying to do is simplify control in our housing, but that parallel capability might be useful for other people too.
Click to expand...

The accessory bus is an RS232 port and power. Each unit has to repeat the data from one port to the next to make it into a bus. I am still thinking about what we want to do to make sure that everything is as simple as you will want. We definitely will not be putting an additional connector on the lens mount.

Ideas range from: offering the follow focus knob without a knob and a more appropriate shaft for incorporating into a housing; to: offering a breakout board with a brain that allows a bunch of pots and switches to be attached. Our remote and FF knob use magnetic encoders rather than pots.
 
HI Eric
Seems to me like two wired cable lengths may be needed. One off camera for Tyler uw housings etc about 2 feet and one long enough for light weight cranes cam/jimmy etc which currently go to about 40" length on the arm plus about 3 ft on the camera end and another slack to ground when using remote desk type control so probably about 60'
Lookin good!!!! I'm also looking for the order form?
TJ
 
Birger mounts instead of Red photo mounts

Birger mounts instead of Red photo mounts

PaulClements said:
Yes you don't need to buy the nikon mount from Red, just the Birger mount. You would take off the PL mount that comes as standard and insert the Birger Mount in it's place using the 4 screws on the front (As seen in the pic on page 1).

Frankly I can't see why anyone will bother buying the $500 Nikon mount now, seems to have been made redundant by Eric and Co at Birger, when for just $900 more you get a follow focus, remote control, and ability to control the lens!
Click to expand...

(I second Brooks remark, I can't believe I missed this thread ! Maybe other still lens users have missed it to.)

I agree with Paul, but have one question, will the Birger Nikon mount allow to mount any Nikon lenses, such as my stock of AI lenses ? I know I won't benefit from any advantages of the Birger mount, it's just I don't want to have to buy two Nikon mounts.

In fact, if the above is possible, I think Birger and Red should should work things out and offer only one Canon and one Nikon mount, what's the point of having these two options. Imagine someone buying a Nikon (or Canon) mount from Red, and then finding out about the Birger mount, what a bummer.

So are reservations open ?

Cheers,
Damien
 
Damien,

I believe all Nikon lenses are the same flange focale depth. So unless I'm missing something, you should be able to use any of their lenses on the electronic mount.

Chuck

Except the early S mount lenses.
 
1/4" stainless shaft

1/4" stainless shaft

birgerEngineer said:
The accessory bus is an RS232 port and power. Each unit has to repeat the data from one port to the next to make it into a bus. I am still thinking about what we want to do to make sure that everything is as simple as you will want. We definitely will not be putting an additional connector on the lens mount.

Ideas range from: offering the follow focus knob without a knob and a more appropriate shaft for incorporating into a housing; to: offering a breakout board with a brain that allows a bunch of pots and switches to be attached. Our remote and FF knob use magnetic encoders rather than pots.
Click to expand...

We use a 1/4" stainless shaft and I am happy to supply you with some.
 
Will we be able to use the vibration reduction feature with this mount? I would think so because the VR is built into the lens and it just needs power.

Also, will the mount be able to maintain a constant lens aperture with variable aperture lenses? For example, for a zoom lens with aperture 2.8-4, can you automatically maintain a steady f/4 (or smaller) throughout the zoom range?

In ENG and EFP situations, sometimes there's no time to change lenses. I would love to use a Nikon 18-200 with the Red camera. I don't mind the smaller aperture because I need some DOF anyway.
 
Specific BIRGER sticky FAQ ?

Specific BIRGER sticky FAQ ?

birgerEngineer said:
I will start a new thread in the next day or two, with current images of the prototypes, a complete feature list, pricing/reservations and any other pertinent information.
Click to expand...

Hello Mike (& reduser.net moderators),
Has this been set up ? Just wondering if there could be a specific BIRGER mount/adapter RedUser.net thread with latest news, updates, prices, how to order etc ...
Would help in monitoring what is what in a single location :)
Thanks

PS : any update on IBC2007 and if an EOS adapter will be on show ?
 
Darwin said:
I had already asked that.
Click to expand...

Thank you. This is such a long thread, I must have missed that.

But this brings up a follow-up question on image stabilization. I was reading that Nikon lenses have 2 levels of stabilization: a low level for looking through the viewfinder, and a high level for when you actually take the picture. Since we are recording motion picture, would it be possible for Birger to turn on the high level at all times?
 
That's not exactly correct, there are two modes to Nikon's VR, I & II. Mode I is for standard hand held where the VR system tries to take out the camera shake induced by your hands and body, mode two is for situations that are a little more violent, like riding in a car or off road, in these situation the VR does the best it can but doesn't try to smooth out the big bumps that would just result in a smeared image in mode one. These do work, when I was on Safari in East Africa the mode II gave me a few keepers bouncing around in the Land Crusier I wouldn't have had otherwise.
But don't expect to get consistently sharp results like that, it's just too hectic. Mode one on the other hand should do well to smoth out normal handheld tele shots.
 
Evin Grant said:
That's not exactly correct, there are two modes to Nikon's VR, I & II. Mode I is for standard hand held where the VR system tries to take out the camera shake induced by your hands and body, mode two is for situations that are a little more violent, like riding in a car or off road, in these situation the VR does the best it can but doesn't try to smooth out the big bumps that would just result in a smeared image in mode one. These do work, when I was on Safari in East Africa the mode II gave me a few keepers bouncing around in the Land Crusier I wouldn't have had otherwise.
But don't expect to get consistently sharp results like that, it's just too hectic. Mode one on the other hand should do well to smoth out normal handheld tele shots.
Click to expand...

Thanks for clearing that up, Evin. I'd still like to see mode 2 supported if possible, because there will definitely be times when we will be shooting from cars, or even just walking with the camera. I wouldn't expect rock solid footage, but any vibration reduction would be helpful.
 
chuck colburn said:
That would be great. I wonder if it can do it at 60 f.p.s.
Click to expand...

Or even 24fps? Or is it optimized for stills.. or is it activated by shooting a shot? It would be incredible if we could get these camera lenses to help out when handholding. That would really add to the revolution.
 
This will have to be tested to know for sure, I do have some doubts, I was under the impresion that the Nikon VR system uses the AF point data to some extent in stabilization, of course the Birger/Red One has no AF point so we'll have to wait and see if manual distance info is enough. As far as the mode I think this is more to do with the lens than the body, there is a phisical switch on the lens casing to engage the different modes.
 
Evin Grant said:
This will have to be tested to know for sure, I do have some doubts, I was under the impresion that the Nikon VR system uses the AF point data to some extent in stabilization, of course the Birger/Red One has no AF point so we'll have to wait and see if manual distance info is enough. As far as the mode I think this is more to do with the lens than the body, there is a phisical switch on the lens casing to engage the different modes.
Click to expand...

I know exactly what you mean..You dont hear the VR motor kick in till the shutter is half way depressed. Can lead one to the conclusion it's working off the AF point.
 
[QUOTESomebody mentioned on a previous thread about the whole RED phenonena and on how business is done will find its way on to a future Harvard course. I think this is true and it will be a business model used worlwide.:[/QUOTE]


I was thinking the same thing myself. If Red One works well....and I hope to put a deposit down soon...it will, I believe, rewrite product development in specialist areas.
 
Dexter Gregoire said:
Does anyone know if the Birger mount+ follow focus is going to compensate for some breathing still lenses do?

Or is that not possible?
Click to expand...

It is one of many features on a list for later. Once we either release our own zoom motor, or have integrated with the RED motor, we will look at implementing this. The real issue is the production of the calibration data.

We have ways to do this automagically... but that will require our auto-interactive focus module that we will not be announcing for some time...

The other request that comes quite often is aperture comensation on variable aperture zooms. Because of the quarter stop steps of the Canon iris mechanism, this feature may not be that interesting without some intervention in post. THis also requires a zoom motor.
 
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