HPX2700 + Canon Lens CAC Issue
by David Fu
on
Apr 28, 2009 at 1:26:15 pm
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.
Re: HPX2700 + Canon Lens CAC Issue by Ethan Sigman on Apr 29, 2009 at 12:33:17 pm
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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Re: HPX2700 + Canon Lens CAC Issue by David Fu on Apr 29, 2009 at 12:39:49 pm
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?
Re: HPX2700 + Canon Lens CAC Issue by steve phillipps on Sep 3, 2009 at 2:26:45 pm
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
