Continuous Beeping When Installing Lens into M50 Mark II (EF-M 11-22mm)

[oldnebraskadude]

Hi Everyone,

Not sure what happened, but whenever I install my EF-M 11-22mm lens into M50 Mark II it continuously beeps, and the screen goes black. It used to work just fine, and only used it a few times. I mainly use the EF-M 22mm lens, and that works perfectly. Any suggestions is greatly apprectiated. 

My camera firmware is Ver.1.0.3

My lens firmware is Ver 1.8.0

Thx!

[stevet1 · Accepted solution]

oldnebraskadude,

Well, if it's happening with one lens, but not the other, I'd be tempted to say that there's something wrong with your first lens. Have you inspected it to see if any of the pins are bent or out of place? Have you tried cleaning off the contacts to see if there's any dirt particles or anything else that might be interfering with the electrical connection?

If you've done those things, and the problem persists, I'd definitely quit using that lens until you can get it inspected and/or repaired.

Steve Thomas

[Tronhard · Accepted solution]

Thanks for your very helpful and detailed response!  I can only agree with Steve that your issues seems to be a fault with the lens, which is a pity - I have an M5 and the 11-22 is one of my favourite optics for that.  I suggest you contact Canon at 800-OK-CANON  to talk to a tech support specialist.

[Waddizzle]

I don’t know what might be wrong with your gear. But I do know that you are supposed to turn off the camera when you change lenses. 

[oldnebraskadude]

LOL Waddizzle! I saw that as soon as I posted my question. I could have sworn I spell-checked...grrrr. I appreciate your quick reply. The weird thing is, my camera is off, but as soon as I install that lens, the camera starts beeping. I've even gone as far as removing the battery, installing the lens, and sure enough, it starts beeping right away... aargh!

[stevet1 · Accepted solution]

oldnebraskadude,

Well, if it's happening with one lens, but not the other, I'd be tempted to say that there's something wrong with your first lens. Have you inspected it to see if any of the pins are bent or out of place? Have you tried cleaning off the contacts to see if there's any dirt particles or anything else that might be interfering with the electrical connection?

If you've done those things, and the problem persists, I'd definitely quit using that lens until you can get it inspected and/or repaired.

Steve Thomas

[oldnebraskadude]

Hey Stevet1 🙂

Thank you so much for suggesting the simplest solution—cleaning off the contacts. I can’t believe something so simple hadn’t crossed my mind! One gentle wipe of the contacts was all it took, and now everything works like new.

I truly appreciate your help!
Brett 🙂

[Tronhard]

Hi and welcome to the forum:

If you are saying that you are changing lenses with the camera turned on, that is definitely not a good idea - for a couple of reasons:

1. When the camera is on, the sensor is energized and will attract dust like a magnet, creating dark spots on your images.
2. With the camera live, there is a risk of a short circuit to the lens - it's true of any device plugged in live - and that can damage the camera, the lens or both.

[oldnebraskadude]

Hi Trevor, thank you for taking the time to review my problem. My apologies for not providing more details in my initial post. You're absolutely right about the importance of keeping the power off when changing lenses, which is something I always check before swapping. However, my camera is off when the beeping starts. The moment I lock this lens in place, the camera starts beeping. I've even gone as far as removing the battery, installing the lens, and sure enough, once the battery is reinstalled, the beeping begins.

The screen remains black, no buttons respond, and changing the settings dial on top doesn't affect anything—the camera is essentially dead except for the beeping. This only happens with this particular lens, and it started happening recently. My camera has the most current firmware available from the website, and there's no firmware update for the lens. Very odd indeed—this has never happened with any of my previous cameras.

[Tronhard · Accepted solution]

Thanks for your very helpful and detailed response!  I can only agree with Steve that your issues seems to be a fault with the lens, which is a pity - I have an M5 and the 11-22 is one of my favourite optics for that.  I suggest you contact Canon at 800-OK-CANON  to talk to a tech support specialist.

[oldnebraskadude]

Hey Trevor 🙂

I took Steve's advice, the simplest of solutions—cleaning off the contacts. I can’t believe something so simple hadn’t crossed my mind! One gentle wipe of the contacts was all it took, and now everything works like new.

I truly appreciate your help!
Brett 🙂

[ebiggs1 · Accepted solution]

"... I do know that you are supposed to turn off the camera when you change lenses. "

I never turn off the camera to change lens and I don't know any pro that does. The first contact break turns off electric current to the lens and it is the last contact to make the circuit when installed. So there is no power going to the lens from the camera to moment you start to twist it.

As to dust getting in, I haven't noticed it but always use common sense if you are in a dusty environment. You may need more care than simply turning off the camera. A lot of the guys I used to run with don't even us lens caps or body caps. I always did and do and I suggest everyone use them. My full time photographer niece, my own niece whom I taught, doesn't' use lens caps but I have gotten her to use the camera body cap. She sells her work for a living!

 Is it best to turn off the camera and put the gear in a changing bag before switching lenses? Yes it probably is. However is necessary and/ or practicle? Hey this is a case of whatever works for you.