It only takes a minute to sign up. Similarly check the "M/A - M" focus mode switch on the lens. In live video mode when switching the setting to AF-F on my Nikon D3200 it acts like the AF-S setting is supposed to, only focusing when I half press the shutter. Many Nikon shooters might be wondering how good the Nikon D850 is when compared to its predecessor, the D810, as well as other Nikon DSLRs. 2017Amanda Doris This model is geared towards casual photography enthusiasts with advanced specifications and performance. Thanks! All three are produced by Commlite with different branding. @redal. nikon does release lens repair manuals, but who need them, they are a real nightmare to fix! But it started working. Cristian Lopez, September 15 by If so, you can try cleaning the contacts that connect the lens to the camera body: detach the lens completely, and look at the rear flange of the lens to locate the contacts. When using a7 II, a7R II, a7 III, a7R III, a9, a6300, a6400 & a6500, they work fairly well with many of the newer Nikon Type G or E lenses. First of all check if the focus of the lens is set to AUTO or MANUAL. Make sure it's set to set to "M/A". AF NIKKOR lenses use a mechanical coupling between the lens and the camera body. ladyross_60. On the lens, M is manual focus, like the 1950s. Beyond that, see if you can narrow the problem down to just the lens, just the body, or just this particular combination, by trying a different AF lens with the same body, and a different AF body with the same lens. You can check this in the "Setup Menu" -> "Buttons" -> "Assign AE-l/AF-L button". MAINTENANCE WARNING: Possible downtime early morning Dec 2, 4, and 9 UTC…, “Question closed” notifications experiment results and graduation. When i press the shutter button the lens will keep moving back and forth. 12/08/2019 by 12/17/2017 by So using an eraser or something like that to clean the connections is quite dangerous (if you have bits of rubber somewhere inside the mirror cavity, that's not going to be good for image quality). The camera does not offer the "Manual focus ring in AF mode" custom setting for enabling/disabling focus ring operation in autofocus mode. Brittany Taylor Then set the lens on A, forcing the focus manually, I put some force on it going clockwise and back for some seconds. I found out something by chance about AF issues I have been having with my Nikon: When you put the lens cover on - if you push it on too hard and the lens turns in a little, it will go into a lock position. Hope this helps. Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. *2: The AF-P lens built-in vibration reduction function cannot be disabled. Any other button on the dial will not focus even though it will take pictures. my d3200 already has that nasty 'metering error, send to nikon' message, but was using it on manual with no problems. Have switched back to default mode since the autofocus function is much quicker and crisper that way. Thanks.Make sure you comment after facing a challenge, you will help a brother somewhere and make the universe better. I knew there was something else I could do.. twiddling the ISO auto, minimum shutter speed and other options also allowed improvements. Nowadays, they are called AF-C (short for auto focus continuous) and AF-S (short for […] It’s worth pointing out now that this process is really to calibrate the autofocus on your camera to the desired lens and will not fix ‘soft’ focus lenses in any way. I had problems with my autofocus on my Nikon D700. Brand. If you've taken care of those checks and eliminated those problems, and you're sure the lens is correctly seated on the camera body, then the most frequent remaining cause is poor electrical connections between the camera body and the lens. Focus. Assignment: A lesson in auto focusing and alternatives. Step 3 – Set the camera to single-point, single-servo autofocus (AF-S for Nikon, One-Shot for Canon) Step 4 – Open the lens to one stop down from its widest aperture (e.g. Do not use AF lenses with the lens focus-mode switch set to M and the camera focus-mode selector set to AF. Try to take a photo with the back button focus. In case the lens is a cheap kit lens like the AF-S DX 18-55, it is likely not worth the trouble to repair, since such a lens can be bought new for about 100 bucks - or you might take the opportunity to upgrade to a better quality lens. Now it works fine, without my assistance. I have the D5100, not the D90:) All my other lenses work fine, it's just this lens. It worked perfectly! Nothing:/. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Make sure it's set to "AF". Who first called natural satellites "moons". 12/06/2017 by If autofocus does not work even with a different lens, there's no easy fix - the problem is almost certainly with the camera body. Nikon AF-P: The lens contains a pulse motor (utilizing stepping motors) to focus smoother and quieter than previous drive systems. Beyond that, see if you can narrow the problem down to just the lens, just the body, or just this particular combination, by trying a different AF lens with the same body, and a different AF body with the same lens. Nabeel Sahotra. First, this lens is AF, not AF-S, which means if you have a D40, D3100, or D5100, you won't be able to auto-focus it. AF speed is on the slow side on my F100. I even teared the camera apart looking for a problem, so funny the solution was so simple ... hhhhh, what I did was simply wiggling the nob 1/4 way and HORRY ! I really wanted my Manual focus ring to be in optimal condition to shoot videos with my D3100.. After thinking and reading more common problems that users are having.. it seemed to me. IS auto-shutdown causes SLR to stop detecting lens - Canon 70-200 2.8L IS MK I. Rangan Dawn. ... Focus motor: Nikon AF-S: Length : 99 mm: Image stabilization : Nikon VR: Diameter : 74 mm: Aperture : f/3.5: Max focal length : 85 mm: Min focal length : 85 mm: Weight : 355 g: See 50 sample photos taken with the Nikon Nikkor AF-S … As previously mentioned, the AF Nikkor 50mm f/1.8D (and any other older AF type lenses) will not auto-focus on the Nikon D5100. My nikon dx AF-S Nikkor 55-300mm lens is not working. Reply ... 367 posts. It could be just an isolated incident with my own lenses, but that little twist has unlocked all my lenses. I had the same problem and it turned out that I had set the AE button to AF on. June 22 by Suzanne Miller. Set the lens to AF (auto focus) to begin with. Some of Nikon's AF-S lenses are pretty damn slow - … That's ok. The problem might be with the camera body, the lens, or the interface between the two. #1 Autofocus not Manual. Hence, I am now confirmed that there is some issue with the lens. set an f/2.8 lens to f/4) and the middle of its zoom range (if it’s a zoom lens). Wipe the contacts carefully with a pencil eraser. MF (manual focus): Choose this setting to shut off the autofocusing system and focus manually. It was stiff and made a ratcheting sound that sounded bad. Let’s get started with low-light performance. As of today, my D610 refuses to use auto focus with any of my lenses (worked fine yesterday). I finally reset the shooting menu and it magically worked. Why does my Canon 550D make a small sound while focusing? Hopefully this would help someone. After I release my lenses, auto focus seems to work as it should. On the camera it must be set on AF, not M, and on the lens put it to M/A (A stands for Autofocus and M for Manual, M/A allows you to use both). Attach an all purpose lens to your camera. I have tried several methods as suggested above but t was still not working. Sometimes it worked sometimes it wouldn't focus at all. it started working again, I did what Michael S suggested and it worked! There are three Nikon AF Smart adapters on the market. The lens has not been dropped. Do PhD students sometimes abandon their original research idea? Just to take a view. Enter the focal length and maximum aperture. What should I do about Nikon D90 intermittent shutter release failure? 12/25/2017 by Check your camera settings if autofocus is set for the AE-L/AF-L Button. Then look at the lens flange on the camera body to locate the lens contacts' counterparts, and wipe these with the pencil eraser as well. The camera will only focus when I put the dial on GUIDE. I have a Nikon 35mm f/1.8G AF-S DX I bought for my Nikon D5100, it's only a couple months old, never been dropped or anything, and it all of a sudden won't auto focus. Auto focus modes can vary between different digital camera brands. Is the Nikon 35mm 2.0 worth the extra money over the 1.8? But when doing this it's vitally important not to get foreign matter into the camera body. AF NIKKOR lenses use a mechanical coupling between the lens and the camera body. Nikon Press Release on introduction of Stepping motor based AF lenses. I had almost given up and then I found your post!! I'm not sure if it's a setting that I can fix or if there is something wrong with the camera itself. then bought a new vr/af/dx lens and suddenly had all the features of that lens the with the knob on manual setting. I am still struggling . The solution is to set up your Nikon so that focusing is activated by a button on the rear and not the shutter release; this is known as back-button focusing. Step 5 – Place the focus point in the middle of the frame (center dot). If the above did not solve the problem, you'd have to figure out if the problem is with the camera or the lens. However, it could be manually focused. this camera has the old/original software version, but i don't want to upgrade until i figure out what actually is causing the metering error. Previously I had reformatted the memory card and defaulted all the setting in the camera. Any suggestions? I have tried a different lens and the auto focus is perfect. @photoshoot. When the lens is switched onto Auto, the camera doesn't take pictures at all, and on manual it needs to be focused manually (obviously). 12/26/2017 by This is at the left-hand side of the camera (from the photographer's point of view) near the bottom, below the lens release button. Nikon Auto Focus Smart Lens Adapters for Sony E-Mount. Hence, I am now confirmed that there is some issue with the lens. This last bit won't apply to your D5100 camera, but if you were using a different body that will autofocus with AF and AF-D lenses also, you could do an additional diagnostic step: see if one of those lenses (i.e. How do people recognise the frequency of a played note? 10/02/2018 by For how long is yet to be determined... For days I had tried all the solutions mentioned in the comments. I held the button down half way to start the auto focus and then used my hand to force turn the lens back and forth and suddenly the auto focus feature started working again! i set it to 'manual' and was shocked when the lens started auto focusing, vibration reduction and got some excellent images. Same as above, went to the setup menu and reset everything. Turn the camera on and check if the problem persists. Can you use the Eldritch Blast cantrip on the same turn as the UA Lurker in the Deep warlock's Grasp of the Deep feature? Why is my D7100's auto focus not working? But to no avail. William Jeffery. Now I can't seem to change it back! Nikon's D3200 DSLR has 24.2 megapixels. I had the same problem last Sunday ( Sept 24, 2017) I had Nikon D5300 and the AF-P 18-55 lens suddenly stopped auto focusing. I went ahead and exchanged it for a new one today:) It will be in, in a week, hopefully I don't have this problem again! Ok so I fumbled around with my camera for like an hour -_- only to find that the switch on the lense one for A and one for M was the problem. Take a piece of cloth dip it into rubbing alcohol and gently wipe the contacts. one of the metering settings was set to auto aperture. If so, how do they cope with it? Guys. I would like to address this question in four separate sub-sections – low-light performance, AF reliability, continuous subject tracking, and live view autofocus performance. I can't believe I didn't look at the switch... feel like an idiot, but a thankful one. How do I get it to work correctly and autofocus on its own? I hope I get all the terminology right trying to explain this. Did China's Chang'e 5 land before November 30th 2020? Sorry I didn't read your question carefully enough. I have a nikon d40 plus standard 18-55mm lens about 2 years 6 months old.The lens has been playing up and today it decided to pack up,it will not focus and can not … When you set your camera lens to AF (auto focus), digital SLR cameras offer the photographer a choice between interchangeable modes. Lenses that do not have a focus motor incorporated into it are simply called AF NIKKOR lenses. Accessibility. I have tried a different lens and the auto focus is perfect. I encountered the same problem but found out that the D3200 requires a AF-S lens to be able to auto focus. Liew Kenlee, 01/26/2018 by I went ahead and took it in to the store today and exchanged it for a new one. I have cleaned the lens and the camera, Any suggestions? My others lens works so I know it is not the camera. Then i inadvertently switched back to A mode and the pictures wouldn't focus on the foreground because i needed to go back to M mode to switch focus to the foreground. This worked!! Now all I have to do is depress the AE/AF button to Auto Focus, you will hear the familiar beep sound when your image is focusesd release the AE/AF button once focused and take your picture in th usual way using shutter release - PROBLEM SOLVED. These Non-CPU lenses simply don’t have the chip and contacts on their mount and, therefore, can only communicate with the new bodies via aperture (manual aperture ring – your camera body won’t be able to adjust aperture any … The autofocus works fine on the other lens I have. The problem was on the lens it self. It looks dark and similar to a fingerprint but not when i manual focus. It released the focus ring. However, consider the following: If you're using LiveView (that is, you use the camera's LCD display rather than the optical viewfinder for composing your shots) autofocus will always be slower and less precise compared to using the viewfinder, and depending on conditions the camera might not be able to focus correctly. It was slow to auto focus but it's getting better the more I work with it now. *3: If the standby timer is allowed to expire, the focus position will change when the timer is restarted, requiring refocusing. It aso made the viewfinder jump 3 times when I first put it on. Best way to let people know you aren't dead, just taking pictures? It focuses on its own right when I turn the setting on but then stays in that fixed range until I half press the shutter. I was having this issue for MONTHS with the standard lens and a new lens. I have only one camera. Don’t panic.... it is not necessarily a problem with the camera OR THE LENS! @flyingdutchman. After reading this forum, I put it back on A and forced it to focus. Set the settings back to AE/AF lock so that autofocus is set to the shutter button only. Thursday 20th August 2015. Make sure it's set to set to "M/A". 10/28/2018 by Can you help me with that on my D3000 please ? Update: mine will autofocus itself sometimes and never when I try to focus it on something up close like my hand 6 inches away. The button is on the lens itself. If you don't have one, see if you can borrow one from a fellow Nikon owner. Currently, there are a number of higher-end Nikon DSLRs that have an aperture indexing (AI) ring built in, which allows for meter coupling with lenses that can’t digitally communicate with the body. You may repeat this a few times. Then reattach the lens by inserting it and rotating counter-clockwise until it locks. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. I hope this works for others. How easy is it to actually track another person's credit card? Does a large black area in live view mean my camera is terminally broken? Nikon 300mm f/4 AF Focus Window. DO NOT twist it hard. Nikon 300mm f/4 Focus Limiter. I had the same problem last Sunday ( Sept 24, 2017) I had Nikon D5300 and the AF-P 18-55 lens suddenly stopped auto focusing. Nikon 18-55mm lens won't auto focus. I played with the focus ring. it seems there's more to this error than just a simple mechanical issue. But for some reason.. the Manual would not move. I have had no issues since. How do I orient myself to the literature concerning a topic of research and not be overwhelmed? Lenses and camera are set to AF using the respective switches on lens and body. How to avoid boats on a mainly oceanic world? This may be a stupid question, but do you have the autofocus switch turned off on the lens? Thanks for the post. Anyone know if this is a simple fix or if I should take it in to be repaired? I have updated the answer to be more consistent with the question in order to better help anybody coming across the question later. I have tried a different lens it’s not still working. I can manual focus but not auto focus. I was sure the ens was broken because I could hear it try. After tinkering for a while I realized I had messed with the settings while on M mode and focused on the background. I take really, REALY good care of my stuff! Reattach the lens, turn the camera on and check if the problem persists. Or, for those camera bodies that have them, a problem with the aperture coupling ring. similar difficulty. Make sure you choose a lens that has an AF / MF switch on the side. Maybe the manual work was the solution, but I wanted to comment also the initial steps that I did. However, the opposite isn’t true: Choosing MF as the Focus mode does not free the lens focusing ring so that you can set focus manually; you must set the lens switch to the M position. You forgot to mention the back button focus - if you are using it then the shutter release button will not automatically focus. rev 2020.12.2.38097, The best answers are voted up and rise to the top, Photography Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. It just whirred. And that did it! Many, but not all, AF-S lenses have their own AF Mode Switches. Someone plese help? This does not apply to AF-S and AF-P lenses, which can be used in M mode without setting the camera focus … Panshin's "savage review" of World of Ptavvs. Your solution sounds easy enough but I was not able to find any DEFAULT options in either Shooting or Setup. The AF-S VR Zoom-NIKKOR 200-400mm f/4G IF-ED will only autofocus with the TC-14E II. It will release. @amanda. AF-S NIKKOR lenses feature Nikon… I did not know that this negated the half press focus function of the shutter button. Hope this helps you guys! First, check the AF/M switch on the D5100 camera body. All Nikon zoom AF-lenses have focal length encoders added. AF Lenses. This is what I did: I went into the shooting menu and in the first option set all to default. I had exactly the same issues, and actually gave up on the camera for a while, until I found Michael Silvers answer on this site. I tried my luck an opened the switch casing by removing the single screw located on the lower part of the panel. Terms — On several Nikon DSLR camera bodies, the focus motor is in the camera and a series of gears drives the lens' focusing mechanism, which allows the lens to focus. What lens should I use to be able to fill the frame with a mounted 35mm slide at 12 inches? I had the same exact problem (with my Nikon D3200 18-55 3.5-5.6 ), and after searching a lot, watching a lot of youtube useless videos, got the solution reading a lot of the experiences posted here. It will probably be slower on more primitive cameras. Same problem, my D3200 would not autofocus on ONE lens. I feel dumb for not trying it sooner, but I’m very happy now. On several Nikon DSLR camera bodies, the focus motor is in the camera and a series of gears drives the lens’ focusing mechanism, which allows the lens to focus. But by inspecting my AF sensors (place your mirror in Mirror up postion (Mup)and release the shutter) I found out that there was a little piece of foam stuck right in front of the AF sensor. This is one of many ways the D3400 saves money so it can do pretty much the same thing for $500 as a $6,500 Nikon D5 does. Allan T Schramm, © 2020 iFixit — Licensed under Creative Commons — Privacy — I was afraid I needed to get it fixed by Nikon. Michael Silver, same here, for the last week i've been trying everything posted on the internet ! Meanwhile, I'm glad that you have managed to resolve your problem. If you suspect this problem, you can try wiping those connections gently with a lens cloth or a tissue without any coatings. Why am I getting poor AF results with my Pentax K10D? I'll keep it in mind in case this happens again in the future! Hi My sons lens won't auto focus, but his larger lens … Thank you for the advice. It’s important to practice alternatives to auto focusing, for times when your lens AF setting isn’t co-operating. In the past, Nikon’s two most popular modes were called Continuous Servo AF and single area AF. It wouldnt autofocus. Must have been jammed or something! Had the same problem, my pictures were blurry because the lens could not rotate automatically, instead it produced some sound meaning something was not working well.I removed the lens and fitted it back and switched the lens to A mode. You can find many of these for a reasonable price on EBay or the London Camera Exchange. Try taking off the lens and cleaning the metal contacts. What is the application of `rev` in real life? 167 months. BUT, only after drilling down into the setup menu. I had the same issue and was able to fix it by slightly and gently turning the focus while in auto focus. In case it's the latter, the following might be a quick fix: Detach / reattach the lens: turn off the camera, depress the lens release button and rotate the lens clockwise until it detaches. To fix: hold on to the very end of your lens and the camera base. working perfectly. After reading this I took the lens at the end and "tweaked"it back and forth, BOOM then autofocus started working. After restarting the camera the autofocus started to work slow, after some shoots looks like it did some kind of automatic calibration and Voila! Flying Dutchman I have tried several methods as suggested above but it’s still not working. Huzzah and thank you for posting! I did exactly as he had done, and now I have my Auto Focus back, so a big thank you from me Michael. Prime Lenses that have a Nikon AF-S focus motor. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. After reading Mark Fouts comment I tried his solution and it solved it. If not, why not? Give the lens a little twist - you will feel it unlock. It seem to be doing the job right. AF Speed . Hopefully It was just a defective lens and I won't have this problem again. Make sure it's set to "AF". How to avoid overuse of words like "however" and "therefore" in academic writing? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. When I am changing the setting to manual the shutter is firing but still there is focus issues. I had it on M for manual when it should have been on A for auto. You choose these from a list. It was working perfectly with my AF 50mm lens, then I got creative and on the menu and changed AF to manual. After that its now working perfectly. It takes light coming in at one end … Allan Schramm. AF-P NIKKOR 70-300mm f/4.5-5.6E ED VR (the only full frame AF-P lens) Additional info on Nikkor AF-P lenses: There are two types of Nikon lenses that have a built-in focus motor: AF-S lenses and AF-P lenses. Here are the 5 most common Camera Lens won't Focus on subject issues that people face while shooting photos using their DSLR camera. 06/24/2018 by The auto focus on the camera is broken. The lens number merely means that the camera can store data for up to 9 different lenses; it’s not an intrinsic property of the lens. I don’t know what to do anymore. With the lens set to AF, it does nothing, but makes a slight whirring sounds as if the camera is trying to, but can't focus the lens. I received the Nikon DX AF-S Nikkor 18-55 VR lens (used) yesterday, my camera was bought used and only came with the 55-200 lens. There are (as far as I know) no menu settings that inhibit autofocus from working correctly. Happy shooting! And while I.. was there I moved the A/M switch.. it looks like a barrel with a spring around it..gently.. and moved the connections applying some pressure to assure that there was nothing loosed.. as Soon as I moved the barrel. And also try another lens to see if that one works. Turn the focus ring on the lens and look for the focus … I carefully removed it with a toothpick and Voila the autofocus works perfectly again. Same here. The lens does not have to be identical to the lens that came with your camera, any recent Nikon AF-S type lens will do. Long ago in a galaxy far away... A lens is a pretty simple thing. My auto focus now works wonderfully. I cant even use manual focus. All AF-S lenses will have similar speed - faster than that of AF lenses - when it comes to the mechanics of focusing the lens Not correct. What does the phrase, a person with “a pair of khaki pants inside a Manila envelope” mean.? Hi, I am new here, and also fairly new to dslr, I have had the Nikon D40 for about 3 years now and finally have grasped using it on settings other than Auto. How do I respond as Black to 1. e4 e6 2.e5? @brittyxsalmon. I have this same problem with my Nikon D5300 and lens suddenly stopped auto focusing. Admittedly it doesn’t explain why it no longer auto focuses with a slight depression of the shutter release as it used too, for for now at least, I am quite content to have found a work around. I have tried several methods as suggested above but t was still not working. Meghan Siobhan, Priscilla Sandoval What should I do when my Nikon AF-S lens won't auto focus? Similarly check the "M/A - M" focus mode switch on the lens. It's like something was gummed up inside or it wasn't quite right on with the gears, but after I turned it slightly it would jump into focus. On Nikon AF-S lenses, moving the switch on the Nikon lens to M automatically sets the Focus mode to MF. My auto focus was working. @hapticz. When that happens it can be a hint that there is a problem with either the electrical connections in the lens mount. What I can conclude at this point is that it is the camera (none of the lenses will AF), and that the AF module is actually fine (green dot comes on when focusing manually). I am having a similar problem. I was about to send my camera in after searching YouTube and google for a few hours, reseting camera, cleaning sensors. Again, be careful not to get any debris inside the camera. Can the automatic damage from the Witch Bolt spell be repeatedly activated using an Order of Scribes wizard's Manifest Mind feature? LOL....No, It's turned on. Same problem with failure to focus - solved by ensuring switch on lens was set at A not M - simply really ! Sometimes big problems have simple solutions. This is Nikon's current production version of this lens, and is superior I think to the older versions (with the possible exception of the short-lived AF-S version). I had the same problem. Check that both the lens and the camera switches are both pointing towards Autofocus. That will eliminate the body as the issue or part of the issue. Nikkor 55-200 af-s/ed/vr. I too then went into the ‘Menu’ setting, looked for ‘Buttons’, and assigned the AE/AF button to AF-ON. Initially I tweaked the lens back and forth, as has been suggested, and it worked for a while (temporarily) but I soon discovered that the issue of non Auto focsus was not resolved after all. autofocus, but not AF-S) will autofocus on your camera body. August 19 by One full turn of the AF screw focuses the lens from infinity to 95 feet. That the function on my A/M switch that was not doing it's job . Anybody found a fix? Exact same problem with my Nikon d5300 with afp 18-55mm kit lens! Which game is this six-sided die with two sets of runic-looking plus, minus and empty sides from? Nikon AF-I, Sigma/Tamron/Tokina: no designation: The lens contains an integrated focus electric motor. The easiest way to do this is to try a different lens. So once again. Failure to observe this precaution could damage the camera or lens. It is a mechanically focused lens. Ricardo De Angelis, Ricardo De Angelis If autofocus works with the other lens, the the problem is almost certainly with your lens. I even tried turning off auto then turning it back on. Thanks to you Michael, 07/30/2019 by Thank you SO MUCH!!! Larry Martin. 01/23/2019 by Be careful to avoid debris getting into the rear of the lens. laura.strah, Happy Fixer Were there often intra-USSR wars? Nikon D5100 not focusing and shooting black at bottom, My Nikon D5300 LCD not turning up + Auto focus not working. if anyone gets hold of a repair manual for these, PLEASE share it! Raza Khalid. Thank you! August 18 by I have the same problem with the auto focus on my Nikon D5100. I am facing same issue since last week, if u both get any solution, plz let me know. Thank you. THANK YOU! In MF, turning the focus ring makes soft clicking sounds.