Can I update a Canon lens firmware that I am using with an adapter ?

[mangurian]

- Can I update firmware in a non EF-M Canon lens  that uses an adapter on my EOS-M100 ?

Thanks,

[Tim]

Hello mangurian, 

At this time there are no functions built into the camera that will support firmware for non-Canon lenses.  I apologize for any inconvenience that this may cause you. 

[RobertTheFat]

---

@Tim wrote:

Hello mangurian, 

At this time there are no functions built into the camera that will support firmware for non-Canon lenses.  I apologize for any inconvenience that this may cause you. 

---

Who said anything about non-Canon lenses?

[ebiggs1]

This might be a clue.

"...non EF-M Canon lens..." or should it be "...non EF-M, Canon lens..."  Ambiguous at least.

[mangurian]

It is an EF-S Canon lens attached to an EOS M100 using an adapter with electronic pass-through. 

( andcolor black)

[ebiggs1]

"Can I update firmware ..."

No Canon lens, I know of, is user FW updateable.  What exactly is the problem that makes you think it isn't working right?

[RobertTheFat]

---

@ebiggs1 wrote:

"Can I update firmware ..."

No Canon lens, I know of, is user FW updateable.  What exactly is the problem that makes you think it isn't working right?

---

I don't think that's true, Ernie. Canon has added lens firmware update capability to some of their higher-end cameras (maybe even your 1DX2!), and I doubt they'd have done that if none of their lenses could be updated.

[ebiggs1]

If that is a possibility I still have to repeat my original statement, "No Canon lens, I know of, is user FW updateable."

It would almost certainly have to be a newer lens than I have. Perhaps the 70-200mil model 3.

[mangurian]

I know of someone who update firmware in a  200-400L lens.

[Waddizzle]

Some of the most recently released lenses can be upgraded by the user by using the camera.

https://community.usa.canon.com/t5/Announcements/New-Firmware-available-for-three-Canon-Lenses/m-p/2...

That is an announcement for a firmware update for a couple of EF-M series lenses.  Many of the “great whites” can be upgraded by the user, too.  Other lens manufacturers offer the feature, so I cannot see Canon not following suit.