Canon R6 Mark ii, can’t get lens to focus with EF lens

[Sarahn]

I just bought from Canon a refurbished Canon r6 Mark ii. I also purchased a Canon EF-EOS R adapter so I can use my EF 70-200 2.8 L IS III USM lens. I can’t get the lens to automatically focus, only manually, and I have to make sure I flip the MF button on the lens to do this. From everything I have read I shouldn’t have to do this, am I missing a setting I need to change in the camera? I’ve went through it and can’t find anything. 

[p4pictures]

The switch on the lens determines if the camera will auto focus or not. Set it to AF and the camera will focus. 

Which button are you pressing to try and focus, shutter button half-press or AF-ON button? The camera will focus when those are pressed. I would check the custom controls in the camera and possibly reset them so that the standard shutter button initiates focus.

[Sarahn]

I cleared the custom functions, custom shooting modes, and reset settings. I turned the AF on the lens back on. Now it will focus but won’t let me take a picture when pressing the shutter button. When I press it, it just gives me a blue box and does nothing. I tried taking a picture of Christmas cards on my fridge about 11 feet from where I’m standing and a giant N on my wall. Nothing. 

[jrhoffman75]

Maybe not enough light? As suggested, go outside and try it.

[p4pictures]

The camera displays a blue AF frame when it is focusing with servo AF, there is no beep or confirmation sound with servo AF. If your camera is set to AI Focus AF, then the camera decides if the subject is moving or not and automatically determines if one shot AF or servo AF should be used. Fortunately the AF points are green coloured for one shot AF, and blue coloured for servo.

Is the shutter mode set to electronic, not 1st curtain electronic, or silent shutter on? If so then you won't hear a noise as the photo is taken and just a brief flash of a white frame around the edge of the LCD to indicate a photo has been captured.

If you have either another EF or RF lens I would try and see if the behaviour changes. If so then it could be your lens that is the issue, or alternatively the mount adapter. I have seen them fail in the past myself. 

[ctitanic]

Is this happening with just this lens or it's happening with other lenses too? Do you have a way to test it with other lenses specially EF lenses? My recommendation is to do that. If you can reproduce the issue with other lenses then the issue is the camera and I would recommend to contact Canon or whoever is the seller. Refurbished cameras come with a warranty and you should have it exchanged or fixed for free.

[Waddizzle]

If you have any filters on the lens, then remove it and test again.

I also recommend testing the lens outside on a sunny day using the Automatic Shooting mode setting on the top dial. Testing in Auto should take any custom settings and programming off the table.