topic Re: lost focus in EF & RF Lenses

lost focus

chief — Tue, 12 Jun 2018 20:48:14 GMT

I have a 3 month old EF 24-105mm f/4L IS II USM that will not focus on either autofocus or manual. When you use auto you can hear lens try to focus and then gets to a point and it looks like you are looking through crystal. Manual ens up same way. This was on my 6d Mll and does same on my 80d. It worked fine a couple of days ago. Was out last night shooting Milky Way using a Rokinon 20mm and IRIX 15mm and they worked fine, but when I put the 24-105mm on this morning would not work. Very frustrating, anybody else ever had this problem?

Re: lost focus

ebiggs1 — Tue, 12 Jun 2018 20:55:06 GMT

Since it happens on both cameras, sounds like the lens is kaput. It happens. Did you happen to drop it? Just a litle. Did it get wet? Just a little?

Re: lost focus

chief — Wed, 13 Jun 2018 00:36:29 GMT

Have not dropped or got lens wet. I try to take care of my gear but that is no longer an operative statement based on empirical evidence. I have had Canon gear for 40 + years and have never had any problems but I guess there is always a first time. It is under warranty.

Re: lost focus

ebiggs1 — Wed, 13 Jun 2018 12:38:37 GMT

" It is under warranty."

Oh, fantastic. Call Canon 1 (800) 652-2666.