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Auto Focus Help needed


Hello Forum I need your help.  We bought a C300 Markii recently and I'm learning the camera which should be great once I learn it.  However, I cannot seem to change the AF Speed.  I currently have the camera's focus set to: 

AF Mode: Continuous

AF Frame Position: Selectable

AF Frame Size: Small 

Face Detection & Tracking: Face Only

AF Speed is Grayed out when I do select grayed out AF Speed it displays error message "This function is not compatible with current lens."  However, I've tried multiple lenses including the Canon 85mm 1.2 and the 16-35mm F2.8.  Btw, I am running the current firmware 1.1.


Any advice would be awesome....




Hello Canwill35, 


According to the Canon Knowledge Base article linked here, these are not compatible lenses for the adjustable AF speed function.  I am sorry for any inconvenience that this may cause you. 


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