EOS R6 Mark II Unable to Get AF through SIRUI Adapter

[TXMack]

I have been a canon user for 15 years, Im no stranger to things canon and I'm fairly smart 😕

Purchased an adapter  SIRUI ef lens to canon RF mount adapter- so that I can use my current selection of lenses.

mounted lenses- ensured they were not in manual focus.. I cannot get AF.  I have gone through the menu (AF:1 and my only option is M)  I called B&H and we did a reset, still only M focus.  I opted to do a firmware update.  the r6 Mark ii doesn't seem to have a .FIR . so maybe its so new that it is still on v 1.0.0??

Im so bummed that I cannot get the focus thing figures out.. any suggestions?

update:!!!

I went to my camera store and got the canon version of the adapter and everything works perfectly now! Thank you guys for all of your health and great insight. I too, am surprised that this was even sold to me to begin with in conjunction with this camera and canon lenses.

[deebatman316 · Accepted solution]

Hello TXMack I recommend that you try the Canon EF/EF-S to RF Mount adapter. Your current mount adapter may not have any electrical contacts to allow for AF and aperture control.

-Demetrius

Happy Holidays

EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM (Retired), EF 50 F/1.8 STM, EF 85mm F/1.8 USM & EF 70-200mm F/2.8L IS III USM

EOS 40D (Retired) & 5D Mark IV

430EX III-RT, 470EX-AI & 600EX II-RT

[deebatman316 · Accepted solution]

Hello TXMack I recommend that you try the Canon EF/EF-S to RF Mount adapter. Your current mount adapter may not have any electrical contacts to allow for AF and aperture control.

-Demetrius

Happy Holidays

EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM (Retired), EF 50 F/1.8 STM, EF 85mm F/1.8 USM & EF 70-200mm F/2.8L IS III USM

EOS 40D (Retired) & 5D Mark IV

430EX III-RT, 470EX-AI & 600EX II-RT

[jrhoffman75]

Is this what you have?

It's dedicated to the Sirui Jupiter lenses (whatever they are) and has no electrical contacts.

[TXMack]

Crazy that this is what the rep on the phone told me to get😖

[FloridaDrafter]

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@jrhoffman75 wrote:

It's dedicated to the Sirui Jupiter lenses (whatever they are) and has no electrical contacts.

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John, they are Anamorphic and Spherical cinema lenses. From the looks of their page, mostly Anamorphic.

Newton

[FloridaDrafter · Accepted solution]

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@TXMack wrote:

I have been a canon user for 15 years, Im no stranger to things canon and I'm fairly smart 😕

Purchased an adapter  SIRUI ef lens to canon RF mount adapter- so that I can use my current selection of lenses.

mounted lenses- ensured they were not in manual focus.. I cannot get AF.  I have gone through the menu (AF:1 and my only option is M)  I called B&H and we did a reset, still only M focus.  I opted to do a firmware update.  the r6 Mark ii doesn't seem to have a .FIR . so maybe its so new that it is still on v 1.0.0??

Im so bummed that I cannot get the focus thing figures out.. any suggestions?

---

This adapter is made for Sirui Cinema lenses. With your EF lenses, there will be no autofocus abilities. Consider the Canon basic or ring type EF - RF converters over other 3rd party adapters after returning the Sirui 🙂

I'm really surprised that B & H didn't tell you that on your "Support" call. This is from their web site and is at the bottom on the INFO page for this adapter.

Per B & H Web Site.

Newton

[TXMack]

They were the ones that recommended that to me!!! I’m going to try the canon OEM tomorrow 🤞🤞🤞