topic Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d) in EOS DSLR & Mirrorless Cameras

Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Steve_mt — Mon, 14 Oct 2024 16:11:50 GMT

I have a Canon 750D equipped with a EFS 18-135mm [edited] lens (and sigma macro) and now I updated to a Canon R6 Mkii using this EFS lens through an adapter and also bought a Canon Macro R100 mm. In the 750D, when the setting on the lens is auto focus (AFS), I could press halfway the shutter and adjust/fine tune the focus with the ring. This was useful to me. If I remember I could even employ the digital magnification

In the R6ii, this function is not working at all, with either lenses (EFS and Macro). When shutter is half down, the ring has no effect. (It works only when manual focus is selected). I hope that this can be resolved by some setting in the camera. I shoot in M mode.

Thank you

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Waddizzle — Mon, 14 Oct 2024 15:00:53 GMT

Welcome to the forum!

I need some clarification on your description of the issues you are experiencing. I am uncertain if you have typos or spelling errors.

I need the full model number of your lenses. Canon released multiple versions of many lenses, which can behave differently from one version to the next.

Are you using EF-S 18-135mm? If so, what is the full model number on the front of the lens? Thanks.

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Steve_mt — Mon, 14 Oct 2024 15:53:50 GMT

Thanks for replying Wad, and sorry for the typos.

As you figured out, it is Canon Zoom Lens EF-S 18-135mm 1:3.5-5.6 IS STM

When I write AFS I had in mind AutoFocusSystem - but it is just AF (not afs).

The Macro i bought a week ago: Canon Lens RF100mm F2.8. (What function has the outer ring ?)

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Tronhard — Mon, 14 Oct 2024 16:47:32 GMT

Hi Steve and welcome:

Do you realize that by attaching any EF-S lens, which are specifically designed for crop-sensor cameras like your 750D on your R6II, that you are drastically reducing the resolution of your sensor?

When an EF-S lens is attached to a FF Mirrorless camera, like your R6II, it automatically goes into crop-sensor mode, and by doing so reducing the MP value of the R6II from 24MP to 9.3MP. That cannot be altered.

Ref P1051 of the Advanced User Guide.

By default, the control ring has no function, you need to select one of those from the many offered via the settings in the wrench menu, customize controls. I would expect that you would have got a small manual with the RF 100mm macro lens and that will tell you what functions can be assigned to the outer ring, otherwise check out your camera Advanced User Guide ( P978) - for a list(because there several) of what the outer ring can do.

If you don't have a copy of the Advanced User Guide, you need to download it, it has far more detail in it than is practical for us to provide. Here is a link to the PDF download page: c012.pdf (start.canon). Note that the guide may be updated with certain firmware upgrades, but that is usually identified in the Firmware description page.

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

deebatman316 — Mon, 14 Oct 2024 16:38:15 GMT

Manual Focus Override has to be enabled in the camera by default its disabled on the EOS R cameras. On DSLRs it was enabled by default. I also think you mean "One Shot" Canon has never had a mode called "AFS" that is a Nikon and Sony term. It should be set to One Shot enabled. This setting has been around since 1987. Canon has had focus by wire lenses since the beginning of the EOS system. The first of such lenses was the EF 300mm F/2.8L USM lens released in 1987. All early Ring Type USM lenses provided Manual Focus Override electrically instead of mechanically like newer Ring Type USM lenses. Also note Manual Focus Override doesn't work when the camera is set to Servo AF or AI Focus. This is because you would be fighting against the camera's AF system. The restriction has been in place since 1987 and there is no way around this restriction.

Post-2012 Camera EOS 5D Mark IV (released in 2016)

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Steve_mt — Mon, 14 Oct 2024 16:50:40 GMT

Dear Trevor,

Thanks for your message. That was the first problem I had when I realised my images are a mere 9.3Mp so I am aware about that. I may buy a dedicated RF 135mm for the R6, but they are pricey (2700 Euro)!!!

I will revert to the manual for the outer ring. I will download a softcopy now too. But is this only me that the focus ring does not do anything (in AF mode) when shutter is half pressed? I thought that's a standard function. It helps on small closeup objecys with far background. Once I adjust the focus on the nearby subjects manually, then the second time the AF locks on it precisely. I am not saying the focus rings does not work at all... on manual focus it does work!!

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Steve_mt — Mon, 14 Oct 2024 16:57:04 GMT

I think I am on the right track after scrutinising the manual 🙂 I am still experimenting in this menu.

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

deebatman316 — Mon, 14 Oct 2024 17:07:14 GMT

Lens Electronic MF and Electronic Full Time MF have to be enabled. Along with the camera seto to One Shot AF. If it's set to Servo AF or AI Focus the focus ring is ignored.

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Steve_mt — Mon, 14 Oct 2024 17:15:49 GMT

Thank you everyone. Yes, i managed now through that menu [AF]. It is working as I intended / wished. I am experimenting a bit more as there are dozens of options and settings in the menu. Special thanks to Deebatman (sorry I posted my screenshot after yr solution because I did not refresh the page and did not see yr messages).

The outer ring seems to be customisable (I had success in P mode which sets the EV setting) but it does nothing at the moment in the M. Coool!!!

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

deebatman316 — Mon, 14 Oct 2024 17:18:58 GMT

Have you looked into the RF 24-240mm F/4-6.3 IS USM lens as another option its a great optic. My colleague @Tronhard has this lens and has reviews of it posted in the forum. A prime lens is more limiting than a zoom lens. It covers the entire focal length and more compared to the EF-S 18-135mm F/3.5-5.6 IS STM lens. Its also a Full Frame lens allowing you to use the entire sensor instead of just the APS-C image circle.

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

deebatman316 — Mon, 14 Oct 2024 17:21:25 GMT

You set up the control ring on the lens for Exposure Compensation which isn't available in Manual Mode. Unless you have ISO set to Auto. That's why its not working in Manual Mode.

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Tronhard — Mon, 14 Oct 2024 18:21:49 GMT

I would agree with my colleague Demetrius that if you want to replace your EF-18-135 IS STM with an RF full-frame optic (which is would strongly encourage since you paid for a 24MP FF sensor) then the RF 24-240 is an excellent option. It punches way above its price point.

The are sometimes available from the Canon USA Refurb store. These lenses might be overstock but new, new but open box, show or demo units, but 'good as new' with a Canon warranty and a discount. If they are out of stock you can request to be notified when they are in.
Shop Canon Refurbished RF24-240mm F4-6.3 IS USM | Canon U.S.A., Inc.
Video for someone who buys refurb gear: Worth it to buy refurbished? Canon Lenses (youtube.com)

Here is a link to some of the images posted in our Gallery tab: Search - Canon Community

Re: Manual focus on AFS setting not working on my R6ii (ok on the 750d)

Steve_mt — Tue, 15 Oct 2024 11:12:58 GMT

No, I have not considered it for some reason and the price is right (my budget was 1000-1200 Eur), not bulky (ideal for travel and botanical surveys, and lighter. 90% percent of the reviews 4 or 5 stars. There is even a 150Eur discount on Amazon right now.

Thanks!!! xxx