topic Re: Canon EOS R100 in EOS DSLR & Mirrorless Cameras

Can't access menu or photos on EOS R100

RobyneMW60 — Tue, 26 May 2026 17:54:49 GMT

Re: Canon EOS R100

RobyneMW60 — Mon, 25 May 2026 00:42:20 GMT

Thanks in Advance - I have done something to the settings of my camera over the weekend (I'm a newbie) and now when I turn the camera on I cannot access the menu or information or photos on my sim card. I have checked the sim card & it is fine & I was able to download the photos onto my computer. I just can't access the photos via the camera to delete etc. The screen has "exp SIM" flashing on the screen on the righthand side. I have tried the camera on A+, P & M settings to try and reset and still the same problem. Hoping someone can help me reset the camera. I would greatly appreciate some advice / help.

Re: Canon EOS R100

stevet1 — Mon, 25 May 2026 02:29:08 GMT

EXP SIM stands for exposure simulation. Your camera reads the room and more or less gives you a representation of what your picture is going to look like, given the settings you have chosen.

If your camera can't "read the room", your exp sim will flash. The other day my exp Sim was flashing, and I realized I had left my lens cap on and the camera was blind.

You mentioned a Sim card. I think you meant an SD card. Sim cards are for making phone calls.

If you have another one, I would try putting in a freshly formatted SD card. Just make sure it's a full sized SD card and not a micro SD with an adapter.

Outside of that, I don't know how to help. If push8ig your. Menu button doesn't bring your Menu up, I don't know how you would get to your settings to reset your camera.

Steve Thomas

Re: Canon EOS R100

ebiggs1 — Mon, 25 May 2026 13:11:21 GMT

"...try and reset and still the same problem."

If your computer reads the SD (not a sim) it is probably OK. If you can't do a proper reset try removing the battery for an extended period of time (days). Turn the camera off. Also, holding the shutter button down for 30+ seconds can drain the residual power in the internal capacitors. You should have to enter the date/time if it is fully reset.

If this doesn't work you need to call Canon 1 (800) 652-2666

Re: Canon EOS R100

jrhoffman75 — Mon, 25 May 2026 14:14:43 GMT

Unclear from the wording if 1. you aren't sure how to reset camera, or 2. reset doesn't work.

If it's #1:

Re: Canon EOS R100

Waddizzle — Mon, 25 May 2026 15:36:00 GMT

“ The screen has "exp SIM" flashing on the screen on the righthand side. “

It sounds like the camera could be in Live View or Movie mode. Does the camera make a noise when you turn it off and on?

Re: Canon EOS R100

LeeP — Mon, 25 May 2026 22:30:50 GMT

EXCELLENT response

Re: Canon EOS R100

RobyneMW60 — Mon, 25 May 2026 23:30:24 GMT

Thank you. I will try taking the battery out for a couple of days & try what you suggest. Fingers crossed.

Re: Canon EOS R100

RobyneMW60 — Mon, 25 May 2026 23:33:01 GMT

Thank you. I can't get to the menu to try and reset the camera. It has been suggested I take the battery out & leave for a couple of days so I'll try that & see if I can then get to the menu. Appreciate you help. Yep SD card not SIM.

Re: Canon EOS R100

RobyneMW60 — Mon, 25 May 2026 23:35:25 GMT

Thank you. Yes that sounds like what is happening "live view" and the orange light also comes on so I think that has something to do with the movie mode. No noise when being turned on/off.

Re: Canon EOS R100

RobyneMW60 — Mon, 25 May 2026 23:39:53 GMT

Thank you. That is what is happening. I have not had the lens cap on when the problem started but did have it on at one stage when I was trying to sort out my stuff up and yes, it did flash then. And yes, the SD card not SIM. I did change the SD card to make sure it wasn't that. I think my biggest issue is I can't access the menu to change any settings.

Re: Canon EOS R100

stevet1 — Tue, 26 May 2026 03:49:51 GMT

RobyneMW60,

You have an odd problem on your hands. You can take a picture, and take the card and put it the computer and the photo is there, but when you hit your Menu button, or the playback button your camera, nothing happens.

It doesn't really sound like a settings issue to me. It almost sounds like you have a short somewhere.

I don't know of any way to reset your camera outside of going through the Menu. Perhaps a camera technician has a way through a software program or something.

If you do take your battery out for a couple of days, recharge it while you are waiting.

If you do contact Canon repairs for an estimate, you may have to decide if a repair is more, or less, cost-effective than just buying a new camera.

These are just my opinions. You can take them with a grain of salt.

Steve Thomas

Re: Canon EOS R100

ebiggs1 — Tue, 26 May 2026 13:53:34 GMT

"I don't know of any way to reset your camera outside of going through the Menu."

Removing the battery for an extended time period will reset the camera back to out of the box settings. Pressing the shutter button will drain any electrical charge left in them that will tend to maintain the current settings. I doubt two days is long enough, however. Some cameras have a seperate keep alive battery that will remember settings for years. The R100 does not as it has a tiny non-serviceable keep alive battery that has to be drained. Its main function is to remember the date/time. As long as the charged main battery is in, the R100 keeps that keep alive battery fully charged so it 'remembers'.

Otherwise, If this doesn't work call Canon 1 (800) 652-2666.

Re: Canon EOS R100

FloridaDrafter — Tue, 26 May 2026 18:32:31 GMT

@RobyneMW60 wrote:

Thanks in Advance - I have done something to the settings of my camera over the weekend (I'm a newbie) and now when I turn the camera on I cannot access the menu or information or photos on my sim card. I have checked the sim card & it is fine & I was able to download the photos onto my computer. I just can't access the photos via the camera to delete etc. The screen has "exp SIM" flashing on the screen on the righthand side. I have tried the camera on A+, P & M settings to try and reset and still the same problem. Hoping someone can help me reset the camera. I would greatly appreciate some advice / help.

You didn't mention, so I have to ask: Is their anything showing in the viewfinder?

Newton