topic Re: My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to. in EOS DSLR & Mirrorless Cameras

My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to.

Alex_Ruiz — Sat, 15 Oct 2016 19:10:48 GMT

My 6D is not auto focusing when on AI servo mode and it is not making the beeping sound that it has found and locked the focus. Also, I notice that the 24-105 lens is making a loud strange noise when it is attempting to focus.

On One Shot mode it does focus and light up. I put on my 35mm lens and the same thing - does not auto focus nor light up or beep. I do NOT hear the sound coming from this lens like I do on the 24-105.

Anyone know what's going on? It wasn't doing this before so I'm wondering if I changed a setting or something. The camera is new and hardly been used.

Thanks.

Re: My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to.

Waddizzle — Sat, 15 Oct 2016 20:57:00 GMT

One, when the camera is in AI Servo mode, it does not beep when it locks focus. Because the camera is supposed to be continually updating focus on a target in AI Servo, the camera would beep relentlessly if if the beep were enabled.

Two, Canon lenses generally do not make "loud strange noises" when focusing. What focusing mode is the camera in when your 24-105 lens makes these noises? Are you referring the EF 24-105 f/4L IS USM lens?

Re: My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to.

Alex_Ruiz — Sat, 15 Oct 2016 21:09:40 GMT

Thank you. Yes, the EF 24-105 f/4 IS USM lens. It makes the sound in all three modes. AI Servo, One shot and Focus. It wasn't making this sound before.

Re: My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to.

Waddizzle — Sat, 15 Oct 2016 21:27:31 GMT

@Alex_Ruiz wrote:
Thank you. Yes, the EF 24-105 f/4 IS USM lens. It makes the sound in all three modes. AI Servo, One shot and Focus. It wasn't making this sound before.

Not good. Your lens most likely needs service. Contact Canon U.S. Support at 1-800-OK-CANON.

Re: My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to.

Alex_Ruiz — Sat, 15 Oct 2016 21:53:59 GMT

Yikes!

So weird as it is clean and brand new. Hasn't been dropped; nothing unusual has happened but I will take it in.

Thanks for the clarification on the AF modes!

Re: My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to.

fisherri — Tue, 14 Apr 2026 03:07:48 GMT

24-105 f/4-7 on an R6.

Re: My 6D is not autofocusing on AI Servo mode and lens is making a sound when trying to.

fisherri — Tue, 14 Apr 2026 03:09:10 GMT

My new 24-105 f 4-7 also makes a buzzing sound while focusing. on a R6