Iris Servo from "broadcast lens control connector"

Does anyone know of a servo motor that can mount to a cine lens and plug into the URSA's "broadcast lens control connector" to give Iris control?

I know there is one possibility from C-Motion but even that I can't find a clear list of which parts you need to make it work.

I've started using PL prime lenses for live production and we can give the camera operators focus control servo but I want the iris to be controlled by the atem. This data gets to the URSAs 'broadcast lens control connector' and there are plenty of motors that could be put on the iris of the lens. But the protocol to link the two seems to be missing.

Iris Servo control on the Broadcast Cameras, is set for (Sony/Canon) B4 12-pin Servo co tool protocol thst is used on a few HD B4 lenses thst have a iris Servo. Doubt if Sony or Canon are going to give up the protocol settings to use on a third party Servo.

That said, contact Baz, he might have a working solution for you. If anyone can do this, it would be Baz.
Cheers

B4 12-pin Servo co tool protocol thst is used on a few HD B4 lenses thst have a iris Servo. Doubt if Sony or Canon are going to give up the protocol settings to use on a third party Servo.

Iris servo is just a Analog Voltage between 2,5V - 7,5V

So need some conversion between voltage and your servo motor.. Which can be done with a arduino..

Good, thanks Daniel.
Cheers

Using an Arduino would be one way but is there nothing a bit more off the shelf? I don't really have time or experience to do programming like that. What do people do if they have for example Sony camera channels and (such as HDC-2500) and want to attach a lens with manual iris? C-Motion make a "camin" (https://cmotion.eu/page/broadcast-solutions) that bridges between their motors and the Hirose port on cameras - a solution that looks like it would cost $3k-$4k to implement. Is this the only solution out there?

Cmotion is 1 of the only boxes that will convert to external servo drive from Broadcast signals..

You could look for the box of Baz with his hobby servo.. Or buy a Redrock Micro inclusive thumb control.. This control is an analog potentiometer.. You might be able to pull off a voltage divider with some resistors to bring 2,5 - 7,5 volt down to 0-5V.. But still a lot of hazzle and not sure how acurate it will be..

Cmotion is 1 of the only boxes that will convert to external servo drive from Broadcast signals..

You could look for the box of Baz with his hobby servo.. Or buy a Redrock Micro inclusive thumb control.. This control is an analog potentiometer.. You might be able to pull off a voltage divider with some resistors to bring 2,5 - 7,5 volt down to 0-5V.. But still a lot of hazzle and not sure how acurate it will be..

@xtreemtec sorry for the necropost...

Can I PM about this problem?

Why PM? Just ask it here.. And i and other people will try to answer.

fair enough then:

I want to implement operator remote iris control (already have zoom remote)

I have limited electronic knowledge, and I have been researching for some time


1.- canon b4 and fujinon b4 pinout, do they have the same pinout?

I have both brand of lens.

2.- Just applying an analog Voltage between 2,5V - 7,5V, in the case of the graphic that you post, to pin 5, I should have iris control?

Have you actually performed such a procedure?

3.- There is no need to ground or apply ground or additional voltage to other pin?

I found this document, that why that's why I ask this question...


Thank you!

I have not performed this in the past. We use the Iris control in the camera as this is just so much easier. Also gets controlled from the Atem Set so we can adjust all cameras properly.

But Basically you add pin 5 to the Wiper of a 50K or 100K potentiometer, And 1 of the ends to the GND pin. (3) And that should do the trick. Do not connect the other pin of the potentiometer. The power is applied from pin 5.

I'm not liable for any damage if you perform this without knowledge about electronics. And would advise you to find somebody in the neighborhood which is an electronic savy.. The hirose 12 is very difficult to solder if you have no expert knowledge about soldering.

Also before hooking everything up.. Just Measure it with a multimeter to check the connections once more.

I have been working on the Canon B4 lens for a couple of days now but haven't been able to get it to move.
As I understand it, it should be connected as next:

pin3: ground
pin4: +5V
pin5: voltage between 2.5 and 7.5 to move the iris
pin6: +12v
pin8: unsure, tried both 5v and ground

I tried the above setup and many variations but haven't gotten it to move. I've also noticed that on pin 5, the lens is outputting just about 5 volts. Which I find strange as it should be an input for the lens and an output for the camera/controller.

I've also noticed that in some documentations, there is a mention of serial ports (port 11 and 12)

Anyone here that has gotten the lens to move with a custom setup that could give some aid?

Here is how I interfaced with the B4 lense.
I did find the iris remote enable pin worked differently on some lenses. either gnd or +5

https://ianmorrish.wordpress.com/2019/01/19/controlling-fujinon-b4-lens-iris/

I started out with simple potnetiometer connected to analog in on Arduino before moving onto the SDI shield so I could control from ATEM software.

I've found your post today, also had a call with Canon to make sure the model that I have matched.

Apparently I had mixed up 2 connectors thus it was not working. Now I managed to get it to work exactly like you have. Next up is programming an api

I've found your post today, also had a call with Canon to make sure the model that I have matched.

Apparently I had mixed up 2 connectors thus it was not working. Now I managed to get it to work exactly like you have. Next up is programming an api

Can you explain how you did that, in the analog way? (not arduino)
Please?

I did it!

As nanosupport, I was using the wrong connector...

PDT: you must use the hirose 12 pin which is in the cable, not the one at the bottom of the zoom...

Here is how I did success

Part list:

01 LM317
01 220 ohm resistor
01 1k ohm potentiometer

Schematic



Actual setup




Canon B4 lens connection

pin3: ground
pin4: +5V
pin5: voltage between 2.5 and 7.5 to move the iris
pin6: +12v
pin8: 5v


Result:

HELLO can someone post the schematics for the post above/ found this post looking for a solution and it looks as though Joseph Villegas has done it without arduino,

thanks for the help!

was able to recover this

do you have the other? where/how these actually connect to the components?

And a jumper between 4 and 8

Excellent thank you again!!

Does anyone know if there is any difference between Cano/Fujinon and Angenieux protocol?

updated image

https://imgur.com/7bWKxEp