My D750 kept reading r11, r12 when I would push the shutter. After 2 weeks it stopped working

I just looked on my D750 to confirm: but "r12" & "r11" are not error codes--they are "remaining buffer shots." Perfectly normal. If I were to guess, you're shooting in RAW + JPEG (Fine)?

The r12 and r11 were always there, but you may not have noticed them. I'm surprised that nobody could agree on what r12 or r11 mean, since you can clearly see their description on page 105 of the user's manual . Here's a screenshot for your convenience:



As an exercise, if you shoot in fast continuous mode (Ch on the lower dial), you'd see the number go r12, r11, r10, r9, r8, r7, etc.--decreasing by one after each shot until the buffer refills.

I can't tell you why your camera won't turn on--likely has nothing to do with the "R12" & "R11". The D750 did have a free shutter recall after the shutter would sometimes lock-up. Happened to me a few times before I sent it in for repair--hasn't happened since. I don't remember the exact nature of what would happen during the lockups, but I do remember that turning the camera off and on and pressing the shutter button would correct the issue. That doesn't sound like what's happening to you...

reedlybottomtooth said:

Has anyone experienced this, and if so what should I do? I had looked up what the r11, r12 codes meant and how I could fix them online, but nobody seemed to agree on what exactly they meant and thus how they could be fixed. They began after I had adjusted my settings and reassigned a few buttons on my camera after taking a class on my camera online. That being the case I tried readjusting some of the old settiings and re-reassigning the functions I had changed, but still no fix. I reset all the user settings, and finally did a hard reset of the camera by pushing the 2 green buttons for 3 seconds, but the codes remained. That said, my camera still worked fine, and with nobody providing a good reason or solution for the suddon r11 and r12 flashing codes I just kept taking pictures. After a couple weeks of taking pictures I just got used to them being there. The codes, or whatever you want to call them. Today, while taking pictures with a freshly charged battery, my camera shut off while I was taking a picture. After getting home and trying 3 other fully charged batteries to no avail, I'm left with a camera that won't turn on. What happened? How can I fix this? I live in a town that doesn't have a camera store for 100 miles so hope for help from anyone in person is something I won't dare endeavor. As it stands, after reading many other posts on people with similer error codes and seeing that their problems with their cameras were not like mine (like I said, I had no problems other than the codes coming up when I pressed the shutter) as well endless suggestions that never solved their problem, I'm wondering if there is even anyone who can help me at all. Please, please, please, tell me there is someone. Be that someone. Please. I'm paying it forward already by heading down town to give all the homeless people a couple bucks as a holiday gesture. Thank you. Godspeed.

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Thanks for the response. Yeah, what I meant to impart was that though people did say it was a code regarding buffering, those that were seeing the code on their camera's, to a person, said that wasn't their issue, and that the code had preceded some specific, but by no means specific from person to person, issue with their camera. I use the fastest memory card there is, so the buffering code, though it may be that, is a false flag for a different problem. I'm under warranty for another couple months, just hoping to find a fix before resulting to sending it in.

Tried the turning on and off and the shutter and all that. Weird. But I appreciate the reply. Thanks.

reedlybottomtooth said:

Thanks for the response. Yeah, what I meant to impart was that though people did say it was a code regarding buffering, those that were seeing the code on their camera's, to a person, said that wasn't their issue, and that the code had preceded some specific, but by no means specific from person to person, issue with their camera. I use the fastest memory card there is, so the buffering code, though it may be that, is a false flag for a different problem. I'm under warranty for another couple months, just hoping to find a fix before resulting to sending it in.

Tried the turning on and off and the shutter and all that. Weird. But I appreciate the reply. Thanks.

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The buffering numbers (eg. r12, r11, etc.) are always there, not just when it precedes a problem--even with the fastest memory cards. It's not that "it may be that" or it's some false flag...that IS what the r-numbers are. The manual even has pictures of it and a whole description.

This is actually how many places commonly test buffer performance. Here 's a video of the D750 working normally. Here 's one of the D500 working normally. You can find countless other ones as well. The r-numbers are supposed to be there. Pretty much every Nikon DSLR will display this "r-number". I'd be more concerned if your camera did NOT have the r12, r11, etc.

I don't think you quite understand what that number is or how the buffer works. This number is the D750's internal buffer memory, not SD cards. The SD cards only affect how fast the buffer can be 'refilled' and written from buffer to SD card. The fastest memory cards would still show that number.

That's not even how Nikon displays errors, btw. That r12 and r11 have nothing to do with your camera not turning on.

The question of "What's error code r12, r11?" is like asking "What's error code F2.8?"

See this thread for a similar issue. A two-button factory reset worked for them.

beatboxa said:

reedlybottomtooth said:

Thanks for the response. Yeah, what I meant to impart was that though people did say it was a code regarding buffering, those that were seeing the code on their camera's, to a person, said that wasn't their issue, and that the code had preceded some specific, but by no means specific from person to person, issue with their camera. I use the fastest memory card there is, so the buffering code, though it may be that, is a false flag for a different problem. I'm under warranty for another couple months, just hoping to find a fix before resulting to sending it in.

Tried the turning on and off and the shutter and all that. Weird. But I appreciate the reply. Thanks.

Click to expand...

The buffering numbers (eg. r12, r11, etc.) are always there, not just when it precedes a problem--even with the fastest memory cards. It's not that "it may be that" or it's some false flag...that IS what the r-numbers are. The manual even has pictures of it and a whole description.

This is actually how many places commonly test buffer performance. Here 's a video of the D750 working normally. Here 's one of the D500 working normally. You can find countless other ones as well. The r-numbers are supposed to be there. Pretty much every Nikon DSLR will display this "r-number". I'd be more concerned if your camera did NOT have the r12, r11, etc.

I don't think you quite understand what that number is or how the buffer works. This number is the D750's internal buffer memory, not SD cards. The SD cards only affect how fast the buffer can be 'refilled' and written from buffer to SD card. The fastest memory cards would still show that number.

That's not even how Nikon displays errors, btw. That r12 and r11 have nothing to do with your camera not turning on.

The question of "What's error code r12, r11?" is like asking "What's error code F2.8?"

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theonetruepath said:

You probably need a factory reset. Which Nikon have reserved for themselves, ie you can't do it without Nikon's special equipment. Or you need a more significant repair. Either way, return to Nikon is going to be required.

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D750 two-button factory reset procedure .

The question of "What's error code r12, r11?" is like asking "What's error code F2.8?"

The writing out of the "above sentence" is like writing out "I'm gonna call you an idiot in a passive aggressive manner in order to make myself look smart and clever to anyone else reading this post but in a way that follows the rules of the forum by not actually saying those words."

I get it, they're not error codes. You explained that too in depth earlier in your post. However you didn't help me at all as you didn't get past how stupid I am and only remarked about that. However I found an actual answer to my question from someone who, though maybe just as dumbfounded at my naivete regarding my camera (I'm new at this) didn't bother to tell me I'm an idiot but rather confirmed what I thought was the problem. Sending it back to Nikon. Get over yourself and be nice to people. Please. And thank you.

Thanks. That's what I thought I was gonna have to do.

beatboxa said:

theonetruepath said:

You probably need a factory reset. Which Nikon have reserved for themselves, ie you can't do it without Nikon's special equipment. Or you need a more significant repair. Either way, return to Nikon is going to be required.

Click to expand...

D750 two-button factory reset procedure .

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That's a 'soft' reset, which sets only a few settings, and requires an 'awake, aware' camera to work. I nother words the camera has to be switched on. If he could switch on the camera he wouldn't need to use it.

If the camera won't turn on, you need a 'hard reset' which is available on some of the low end Nikon cameras. They don't have it on any of the high end models, they don't tell us why but we can assume it's something like they decided they would do a good enough job on the camera software that it could never hang and they don't want any way of removing all settings including things like copyright message, shutter count, etc.

reedlybottomtooth said:

The question of "What's error code r12, r11?" is like asking "What's error code F2.8?"

The writing out of the "above sentence" is like writing out "I'm gonna call you an idiot in a passive aggressive manner in order to make myself look smart and clever to anyone else reading this post but in a way that follows the rules of the forum by not actually saying those words."

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My statement was not meant to be rude at all in any way. It's an analogy I used as an example because you otherwise didn't seem to understand. You took it to be rude, but I didn't write it to be rude.

I wrote a polite and in depth response first that definitely defined what 'r12' means, and you definitely didn't get it because you argued that it's still indicating something wrong. Then you threw in that you have the fasted memory card so you shouldn't see r12...

At least 1 other poster saw how little sense your response made as well and responded to correct you as well, also in a direct manner. They started their response to you with "...ermmm... no."

reedlybottomtooth said:

I get it, they're not error codes. You explained that too in depth earlier in your post. However you didn't help me at all as you didn't get past how stupid I am and only remarked about that. However I found an actual answer to my question from someone who, though maybe just as dumbfounded at my naivete regarding my camera (I'm new at this) didn't bother to tell me I'm an idiot but rather confirmed what I thought was the problem. Sending it back to Nikon. Get over yourself and be nice to people. Please. And thank you.

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I'm glad you get it.

Again, I never called you stupid or an idiot or inferred it in any way. You may feel stupid after realizing what those codes mean, but that's got nothing to do with me. That's hypersensitivity to being wrong on your part. I was helping you and being nice for doing so. I could have just not answered your incorrect response and let you continue to think that you have an r12 error. If you sent it to Nikon and got it sent back, I guarantee you that the first thing you'd check is 'r12' and think it still had an issue.

You're the one who needs to be nice. I tried to help and set you on the right track, I gave you some valuable information, I sent you a screenshot of your manual...and you argued with this. You still didn't get it even after all of that evidence. Should I have sent a response telling you how stupid you made me feel that you didn't believe me?

Instead, I sent you example videos, provided a simple-to-understand analogy, and overall I corrected some mistaken ideas you had. What did I do wrong here? Should I have added airplane noises while feeding you information? I tried to put you at ease that r12 is not an error and get you looking in the right place...

...and you didn't even thank me for the info or effort. You wrote some rant about how rude I was to have corrected you. That's not very nice of you.

theonetruepath said:

beatboxa said:

theonetruepath said:

You probably need a factory reset. Which Nikon have reserved for themselves, ie you can't do it without Nikon's special equipment. Or you need a more significant repair. Either way, return to Nikon is going to be required.

Click to expand...

D750 two-button factory reset procedure .

Click to expand...

That's a 'soft' reset, which sets only a few settings, and requires an 'awake, aware' camera to work. I nother words the camera has to be switched on. If he could switch on the camera he wouldn't need to use it.

If the camera won't turn on, you need a 'hard reset' which is available on some of the low end Nikon cameras. They don't have it on any of the high end models, they don't tell us why but we can assume it's something like they decided they would do a good enough job on the camera software that it could never hang and they don't want any way of removing all settings including things like copyright message, shutter count, etc.

Click to expand...

Gotcha...makes sense. I just read "D750 is dead" and "this worked". Thanks for the heads up on soft reset vs. hard reset!

...or maybe I should tell you how rude you are for correcting me and making me feel so stupid and idiotic...? I'm not sure what my next move is...

Lands sakes.. Enough already. I didn't know what those codes meant either and I learned a lot from this thread.

Thanks for for the info. Merry Christmas.

JulesH said:

Lands sakes.. Enough already. I didn't know what those codes meant either and I learned a lot from this thread.

Thanks for for the info. Merry Christmas.

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Cool, no worries. Hope it helped! Merry Christmas.