09-20-2013 11:12 PM
09-20-2013 11:22 PM
Hi, markmoon!
Our forums are designed for support and discussion of consumer-level Canon products. For assistance on a broadcast lens such as this one, your best choice for support and service would be to contact Canon's Broadcast and Communication Products division, whose support page can be found here.
We hope this helps!
03/26/2024: New firmware updates are available.
EOS 1DX Mark III - Version 1.9.0
12/05/2023: New firmware updates are available.
EOS R6 Mark II - Version 1.3.0
07/31/2023: New firmware updates are available.
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