I just recently purchased a D90, and a few times now I have gotten the blinking "f--" error. In reading through the manual I found that the error means a lens is not attached or a non CPU lens is attached. However, I do have a lens attached, the kit lens (AF-S NIKKOR 18-105mm DX)
Has anyone else experienced this? Or does anyone know what might be causing this to happen?
>Hi, > >I just recently purchased a D90, and a few times now I have >gotten the blinking "f--" error. In reading through >the manual I found that the error means a lens is not attached >or a non CPU lens is attached. However, I do have a lens >attached, the kit lens (AF-S NIKKOR 18-105mm DX) > >Has anyone else experienced this? Or does anyone know what >might be causing this to happen? > >Thanks.. > >Andy
Andy, my wife & I have seen this on our D80 and the D50, as well, with our Tamron lenses. The error description is accurate, the cause can be debated, but in simple terms, yes, it's a communication error between camera & lens.
There are several ways to take care of this. The easiest is to turn the camera off & back on again. If that doesn't do it, you can remove the lens and remount it. I've found even half a turn without completely removing the lens is enough.
One cause I've heard is that the contacts on the body and lens can develop a kind of varnishing quality over time which inhibits the connectivity. The antidote recommended is to use a pencil eraser and *very* carefully remove that varnish. Needless to say, great care should be taken not to allow any particles to get into the camera. Once every 6 months should be sufficient from what I hear. You might want to ask your dealer for help with this, if you're new to DSLRs.
The same eraser technique can be used on the hot shoe if the external flash connectivity needs some improvement. I haven't heard of this happening with a Nikon lens before. Usually they fit tighter, which might avoid this; however tighter lens do take longer to change.
Overall, this is not a big deal. I haven't had the error return on the D80. My wife has seen it only once (since using the eraser) on the D50, but turning the camera off and back on solved it. I think seasoned shooters may do this without even thinking about it.
Since the 1.11 firmware update, this error on the D80 stopped blinking and simply displayed. For what it's worth, I think I liked it blinking better.
Yes, though I never experienced it myself, I recall a lot of D80 discussions about the f-- error, mostly with the 18-135 kit lens, which like the VR18-105 is also a plastic-mount lens. Some were able to get around the issue by remounting the lens, others by cleaning the CPU contacts, and some had to pay a visit to Nikon service.
No issues for me with either the D80 or D90, but that doesn't help those who do have the problem.
I haven't had a chance to read posts about the D90 f--error..I wish I had...I have sent the camera body to Nikon and lens I have on this camera to Sigma (18-200mm) for service. I noticed the f--error while the camera was at rest on the table..I did check to see what's going on only to find out that the plastics on the connector pins on both the lens and body melted due to overheating..short circuit maybe due to the lens rotated a bit w/o me noticing it..But I am pretty sure, it was locked properly..Nikon and Sigma covered the damage under the warranty..
But I cried for the $147 shipping I paid to send them off. I don't think it's fair.I could have spend that for a decent flash, just add few bucks maybe...BTW, this is my first DSLR...(=
Thanks for this website...it is an excellent database for all Nikon thing...
Pencil eraser is very abrasive and the gold alloy plating on the contacts will wear off eventually making the original oxidation problem much worse. The oxidation layer is only a few molecules thick so taking an abrasive to the surface is overkill.
A longer lasting and safer method to remove oxide is to use a chemical De-oxidizer available at any hi-fi shop. Do not confuse "Contact Cleaner" for de-oxidizer, contact cleaner is much too dry and will ruin contacts much faster than an eraser will. De-oxidizer's are not cleaners per se, they chemically react with oxides of metals to strip off the extra oxygen that attached to the alloy material that was combined with the gold to make longer lasting contacts, so it causes no wear. A tiny drop of De-Oxit, one effective form of de-oxidizer, will last 6-12 months. It comes in several types, one is D-5, recommended, and D-n-5 which is a faster drying version(for best effect it never needs to dry) but contains Naptha which will attack some types of plastic so do not use D-n-5. This problem occurs mostly with lenses that stay on the camera without having the periodic rotating motion in mounting and unmounting the lens which keeps the oxide layer thin. Contacts that do not get exercised, in camera, stereos even light switches are most likely to be affected. With plastic mount lenses, there is an addition cause, misalignment of the contact pins. The plastic mount lenses like the 18-105VR have a lot of necessary built-in slop in the fit. While in place it can be rotated a bit. rotating it slightly back and forth to re-seat the contacts will often take care of the problem and can be done instantly without changing your position while looking through the viewfinder.
>The antidote recommended is to use a pencil eraser and *very* >carefully remove that varnish. Needless to say, great care should be >taken not to allow any particles to get into the camera.
Wow VuJaDe (use to live that nightmare) - when I worked for a computer company that made memory boards for Prime, DEC and Wang (before they took over the storage world), we used to tell our customers to use a pencil eraser to correct double-bit memory errors or tell them to reseat the memory card several time. Imagine the response when we told a customer to take a pencil eraser to their $25k 2MB memory module for their mini. I guess every machine crashes twice.
I just bought a new D90 a week ago Tuesday, and thought I was in love. It seems like a wonderful camera, but after four flawless days, I started having intermittent episodes of the camera freezing up with either the f-- code, the fEE code, or just refusing to communicate with the lens at all. Even if I switch to manual focus, sometimes it will refuse to take a picture. Turning the aperture dial has no effect on the aperture number when this happens. I've tried everything, from re-attaching the lens to turning the camera off, to changing lenses, to removing the battery, to green dot reset. I have a Tamron 18-270 lens, and was starting to think it was the lens, but now I've had the same thing happen with my Nikon 50mm 1.4 lens, and that lasted for about an hour, before I figured out how to turn the aperture ring to f22 to reset it. Sometimes I turn it off for a few minutes, turn it back on and it's working, and get 2 to 5 shots and then it quits again. Most frustrating. This is my third DSLR, and I never had anything like this happen before. Are Nikons really this delicate and finicky? You guys must miss a lot of shots.
Sometimes, about 30% of my shots fail to happen. When I get it working again, it might go for 2 shots, or 10, or 30, but eventually it quits again. I am reluctant to send it away for three weeks, because I hate being without a camera, but it's starting to look like I got a lemon. I have a one month trip to the Mediterranean this summer, and it will kill me if my camera misses 30 percent of the shots.
I guess this one's going back to the store. Maybe they'll just swap me a new one, so I don't have to wait for three weeks.
#11. "RE: D90 f -- error" In response to Reply # 10
St Petersburg, RU
Please don't pass that rumor around, pencil or worse, ink eraser much too abrasive for contacts. The contacts are not dirty, they are oxidized which requires no removal of metal to de-oxidize. An eraser will score and scratch the contact surfaces, gouging out uneven microscopic chunks of contact plating, making oxidation worse in a few days and impairs conduction between the two contact halves. Use a de-oxidizer chemical, not abrasion or "contact cleaner" which is too dry of a solvent so it creates a larger more serious oxidation problem in short order. Stan St Petersburg Russia
#14. "RE: D90 f -- error" In response to Reply # 0
Andy, I had the same error. If the qentle twist doesnt work. Make sure the manual ring is still lined up with the default setting on the lens. If you twist it slightly while putting the lens on it will caused the error..