Some camera errors are due to internal computer glitches. A few things to check:

> Are the body contacts and lens contacts clean? Wipe with a microfiber cloth very slightly moistened in 90% isopropyl alcohol.

> Is there a button cell battery used in the camera? If so, remove it, clean it, test it with a button cell battery tester. Or, if it has been more than a year since it was changed, just swap in a new one. But before you do, be sure the camera battery terminals are clean. Residues can be removed with Deoxit, or with WD-40 Specialist Elecrical Contact Cleaner Spray, either of which should be applied LIGHTLY to a lint-free cotton cloth swab. A mild vinegar solution, followed by distilled water, works too, but in ANY CASE, don't use anything wet enough to get drops of liquid in the camera, and don't spray cleaner into the camera.

> Are the camera's main battery terminals clean? See procedure above.

> Is the main battery over three years old? Consider replacing it, especially if it won't hold a charge for very long.

> Is the camera firmware up to date? This will require some reading of your manual, and perhaps a visit to Nikon's website to compare firmware version numbers. It is probably worth updating if it's an older version, because sometimes firmware updates solve weird problems by refreshing the code.

If you choose to update firmware, follow the instructions VERY carefully, to the letter. Battery must be charged to 100% before you start. You will need your computer and a good Internet connection to download and unzip or unpack the firmware binary. You will need a memory card, freshly-formatted *by the camera* (not formatted in a computer!). Do not interrupt the process... It will probably take longer than you think it should.

Over a year ago I bought a refurbished Nikon D 3400 from a reputable place that’s often spoken about on uhh.
Took very good pictures I even bought a better lens than the stock lens.

But then I began noticing when I was looking at viewfinder the code R 11. And I could not get rid of it. I looked online and I even called Nikon and they told me it wasn’t anything to be concerned about that it was basically saying that the buffer was full. Something doesn’t make sense to me. I have several digital cameras that I use so it’s not like I was using this one excessively.
Can the buffer be emptied because I cannot get rid of that R11 code. It does hinder you from taking several photos in a row because the buffer is already full. She also suggested I could send it in but why would I pay something like that if there really wasn’t anything that they could do. She never said it could be reset. And if it could be reset why didn’t she tell me how. Is anyone familiar with this? Thank you

Amazon delivery has tanked, as far as I'm concerned. Amazon is now my last choice when I'm shopping. Nothing arrives in less that a week. I'll get an email saying the item has shipped "Two-Day Delivery," and it tells me that the package will arrive in a week or more. I called and asked about this a while ago, and she said that the 2-day deal means after it has shipped. It never was that way, and I still don't get packages within two days of shipping.

Other parts of the country still have fast delivery, but not here. If other companies can ship within two or three days, why can't Amazon?