Canon 17-120 not powering or being recognized sup 5.0

Sun Aug 06, 2017 2:12 am

Do I need to install something in specific to get access to this lens again?

Rec trigger not functioning, and power not coming from the ef mount.

Have to run power from a ptap to the lens to make it work.

Thanks!
Justin Lovell
Associate CSC Cinematographer

Frame Discreet // 8/16/35 film scans
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justin lovell
 
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Re: Canon 17-120 not powering or being recognized sup 5.0

Thu Aug 10, 2017 11:00 am

Justin contacted us also via eMail, this is the reply of a colleague of mine:

The ALEXA Mini’s EF mount does not provide enough power to power the Canon 17-120mm, or other ENG style lenses with EF mount.
Also the REC start/stop trigger is not supported through the EF mount.
The only way to power the lens and use the REC start/stop trigger is to use a PL version of this lens in combination with an AMIRA PL mount.



Best,
Jan
Jan Heugel
Application Engineer
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