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HPX2700 + Canon Lens CAC Issue
We have a Canon hj11ex4.7b IRSE lens and a Panasonic HPX2700. The Panasonic website offers a CAC file for the HJ11ex4.7b AISE. The cameras won’t accept this file for our lens, but I am trying to research the difference between AISE and IRSE, but everywhere I look I see these two names in tandem with each other, as if there is no difference. Can anyone shed some light to what is going on.
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5 Replies
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Hello,
I have the 2700 and the canon IASE. the difference is the remote focus servo control that the iase has and the irse does not. the purpose of this control is to allow the lens to be mounted on a jibbed camera, to give the operator control of the focus when the cam is not on his/her shoulder. the irse has remote zoom control only to be used on shoulder/tripod. the cac function wants to know the focus position to make its adjustments to the image and therefore i believe the iase takes this info from the servo position.
Ethan
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Thanks for the info, Ethan. It seems like it should be easy for the 2700 to take the servo reading from the IRSE lens also. When you turn on your camera with this lens, do you have to go through all the focal ranges and f stops as mentioned on the Panasonic site for this lens and camera combo? Or does it start up saying the CAC file loaded successfully?
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The CAC compatibility seems to be an odd thing. With the Fujinon lenses there is support generally for the versions with and without servo focus. With one in fact, the HA18x7.6, the BERM version which has no servo focus, is listed, while the BERD version which has servo is not! I’m getting a BERD to try so will see if it does actually work.
Steve -
Hi David. We do have the same issue here, Pana HPX 3000 and Canon Hj11ex4.7b IRSE. I just want to ask if you found a solution for this. Thanks in advance, greetings from austria, erwin
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I am a Canon BCTV Tech.
The reason the IRSE will not work is because there is no signal sent from the lens to the camera when the focus ring is turned. The IASE version not only has a focus motor, but also an encoder that sends the position of the focus ring back to the camera. Without this focus follow signal, the CAC will not work.
Josh
Canon BCTV
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