Serious Viltrox EF-M2 II autofocus noise! Remove the lens without touching the tripod and attach the lens to the USB dock. But the location where the ruler bisects the target focus plane does matter: depending on where you stick the pins in the foamcore, zero on the ruler may or may not exactly line up with the target focus plane. So does this mean its an issue with the Camera Body.? Because it is at 200% don’t use the definition as a measurement. In the case of any autofocus problem becoming apparent on inspection, we will rectify the situation and make every effort to minimise delay and inconvenience. Adam owns a production company that specializes in corporate marketing and brand strategy. Ole Henrik Skjelstad is a Norwegian math teacher and landscape photographer. This is a limited problem that will not occur in any lenses other than those specifically listed above. I acquired a free Sigma 24-70 f/2.8 lens that had a few issues–namely, autofocus was broken and the zoom was incredibly hard to turn. After using the lens in full manual for a while, I determined that I would attempt to repair it. I first did a quick disassembly of the mount, exposing the autofocus motor and the top of the lens components. Adam Frimer is a Guinness World Record holder, producer, and DoP based in Tel-Aviv, Israel. Hi all, I bought a second hand 150-500 mm sigma lens to use with my d7200, was all fine but all of a sudden weird stuff is happening. Check that both the lens and the camera switches are both pointing towards Autofocus. First of all, a little background. The Sigma USB dock is another world because the lens performs totally different as the distance with the subject change. First, you’ll need a Sigma USB Dock and if you haven’t already, download and install the Sigma Optimization Pro software (available here). To measure in the right way, look for the focal plane mark symbol on the camera and start measuring from that point.). You can also try using a hand to block out the light or a lens hood, and lock your focus. ONLINE REPAIR ORDER It was sent for repair and needed a new AF motor. Tomasko No longer a newbie, moving up! I pointed a light directly on the focus target (so I didn’t use the MLU function)2. Re-attach the lens to the camera, insert back the SD and take a second shot. If you would like to send your repair to Sigma Corporation of America please complete the online repair form. 01959 541444 Photographers have been warned of a potential ‘autofocus defect’ affecting some Sigma telezoom lenses. Re-attach the lens to the camera, insert back the SD and take a second shot. I have a D7000, I have been having the Auto Focus issue with all my lenses (35mm(Nikkor), 17-70mm (Sigma), 70-300mm (Sigma)). Instead use the chromatic aberration. Chuck it in the bin if not covered by Sigma (UK) warranty. Yalding Hill If you want to get fancy, you could also glue a spare quick release to the bottom to make for speedy mounting on a tripod, and add a small bubble level to the top. Here is Stocksy United photographer Luca Pierro’s process for calibrating the focus of his Sigma lenses (but the process could easily be adapted to all brands as well): I pointed the center focus point to the center of the target, perfectly perpendicular to the sensor. But the issue does not seem to get better. Although it is possible to adjust the autofocusing of third-party lenses in-camera, Sigma … Remember, though, if you have multiple cameras, you are making the adjustment in the camera, not the lens, so you need to calibrate each lens on each camera. About 8 months ago I purchased a new Sigma 50-500mm f/4.5-6.3 DG OS HSM APO lens (that’s a mouthful). If you’d prefer a commercially available option, you can purchase a Datacolor SpyderLensCal Autofocus Calibration Aid ($64 from B&H). Despite what photographers always argue in the blogosphere, BOTH autofocus methods require contrast in order to focus. The safest way would be to send it to Canon Service Centre or a repair shop and ask for a quote on the repairs. This target was originally created by Toronto fitness photographer David Liang. There's little worse than getting a new piece of gear and having it fail on you. Autofocus micro adjustment is a feature in the camera and a process that helps you correct focusing errors like front focusing or back focusing. The problem affects some APO 50-500mm f/4.5-6.3 DG OS HSM, APO 120-400mm f/4.5-5.6 DG OS HSM and APO 150-500mm f/5-6.3 DG OS HSM zooms. Strong reflections can cause a DSLR’s autofocus to fail or to misread the subject. Kelsey Media Ltd In autofocus mode my camera recognizes when an object is out of focus and makes a single click noise, but the focus does not change. I first did a quick disassembly of the mount, exposing the autofocus motor and the top of the lens components. If you do, post some pictures :) Tel: 631 227-2036 Toll Free: 800 896-6858 Fax: 631 585-1895 E-mail: info@sigmaphoto.com. Dec 04, 2020 ... How to Fix … It was sent for repair and needed a new AF motor. Attn: Service Department 15 Fleetwood Court Ronkonkoma, NY 11779. All the internet research I've done points to issues electronic, but I believe this to be mechanical simply because of the noise it makes. Anyone have any experience with Sigma for repairs? Discussion in 'Beyond the Basics' started by Tomasko, Oct 1, 2017. But as I am now using a set of Sigma ART lenses for the majority of my work, and especially with the new Sigma ART 85mm, I am using f/1.4 more than ever before and with that narrow of a depth of field, I am noticing subtle focus errors more and more often. I purchased it along with a 5D. Lens is long out of warranty. Joined: Oct 17, 2010 Messages: 708 Likes Received: 76 Can others edit my Photos: Photos OK to edit. Attn: Service Department 15 Fleetwood Court Ronkonkoma, NY 11779. If you are the owner of one of the above three focal lengths but your serial number is different to those specified above, then you need take no further action. We deeply apologise if any inconvenience has been caused to our customers. Tel: 631 227-2036 Toll Free: 800 896-6858 Fax: 631 585-1895 E-mail: info@sigmaphoto.com. I didn't notice that issue till I saw the pictures in the big screen. Photographers have been warned of a potential ‘autofocus defect’ affecting some Sigma telezoom lenses. Posted on April 3, 2011 by Adam. In manual focus mode the focus wheel is locked, and in autofocus mode the focus wheel spins freely but does not change the focus at all. All lenses have some tolerance built into the manufacturing process, so not every lens focuses exactly the same. I recently got Sigma 35mm F1.4 Art lens for my Canon Rebel T4i. If however you are in possession of one of the lenses with a serial number mentioned above, please contact us on our special helpline 01707 376 795 and we will arrange to collect your lens at no cost to yourself. That way if you experience problems, Sigma will repair or replace it. With modern high megapixel cameras even a slight front or back focus can be the difference between a usable image and a reject. Hacking Photography - one Picture at a time. If there a way to fix this problem, as the AF area is not highlighted, also the focus mode is greyed out?? The older your camera gear gets the more chance that things will deteriorate. If not, it'll cost around £85.00+ to fix (see the Sigma repair tariff at: Sigma Imaging (UK) Ltd). Focus ring problem is a common known fault of this Sigma lens for Sony. #1 Autofocus not Manual. I checked with multiple values. I searched for this issue and it seems to be a known issue. That happens because metal gear moves planstic focus ring inside the lens and the focus infinity position is being detected when the camera can't move the ring any further. Some subjects confuse even the most sophisticated autofocusing systems, causing a camera’s autofocus motor to spend a long time “hunting” for its focus point. 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). Maybe you will see autofocus kick in while you do that, proving a connection problem. Here is a video from Sigma that explains how to use the Sigma USB Dock and Optimization Pro software to calibrate the focus of your Sigma lenses. I tried to Calibarate the Camera using AF Fine Tune but it does not do any Calibaration. JP I have two new lenses now! Sigma Acknowledges Auto-Focus Problems in Some Recent Lenses - Offers Fix. I acquired a free Sigma 24-70 f/2.8 lens that had a few issues–namely, autofocus was broken and the zoom was incredibly hard to turn. Open the SIGMA software and add a + 1 or a +2. So, if the 0 is green, the 3 is purple and the 1 or the number 2 is black, this means that you have some front focusing. After using the lens in full manual for a while, I determined that I would attempt to repair it. This issue could possibly occur in some lenses within the following range of serial numbers: APO 50-500mm F4.5-6.3 DG OS HSM: Serial Numbers between 10633051 and 10972000, APO 120-400mm F4.5-5.6 DG OS HSM: Serial Numbers between 10574001 and 10972000, APO 150-500mm F5-6.3 DG OS HSM: Serial Numbers between 10674301 and 10972000. Sigma’s strategy for designing autofocus lenses has been the good old method of reverse engineering. Photographer Martin Melchior recently did this with his Sigma 70-210 f/2.8 APO lens, ... Nikon Z6 II vs Canon R5 vs Sony a7 III Autofocus Comparison. Hello, The autofocus on my Canon 18-55mm is malfunctioning and I'm afraid it may be broken. Did you find a big difference in image quality? I decided to compare the Sigma at 300mm vs. my Canon 70-100mm 4.6L, and these are the results: Canon 70-300L @ 300mm over a distance of 10m (F8 1/250, tripod) Sigma 100-600 C @ 300mm over a distance of 10m (F8 1/250, tripod) As you can see, the Sigma is blurry throughout the image, whereas the Canon is pretty sharp. Third-party adjustments. Since the day one I have been facing bad focusing issues. Activate autofocus and watch where the edge snaps into focus relative to the bracket. Dec 04, 2020 ... How to Fix … Sigma has pledged to rectify the fault, free of charge. That happens because metal gear moves planstic focus ring inside the lens and the focus infinity position is being detected when the camera can't move the ring any further. Sigma 50-500mm OS Autofocus problems. Yalding Cleaned contacts, tried it on 3 different bodies and nothing. This implies that some lenses will not auto-focus on a teleconverter, e.g. His work has been commissioned by Adobe, Microsoft, Nike, Samsung, Dell, AVS, Starbucks, Viber, and WeWork. Assembly is pretty self explanatory, you basically stick the target to a piece of foam core using a glue stick or two sided tape, cut it out and match the tabs (I used a glue gun to secure the pieces) and then insert pins or straightened paperclips as the specified locations to hold the ruler in place. It's especially bad if it's a high-end lens. Results are astonishing. Filed Under: DIY Tagged With: focus, focus calibration, focusing, Lens Calibration, prime lens, sigma usb dock. Sigma has pledged to rectify the fault, free of charge. To see more of his work please visit his studio website blurMEDIAphotography, or follow him on Twitter, 500px, Google Plus or YouTube. If you happen to use Sigma ART series lenses, you can also use Sigma’s USB Dock for even more refined lens focus calibrations. I sent my Sigma lens to CRJ - Camera Repair Japan (authorized Sigma repair facility) and they repaired the autofocus motor, adjusted focus and aperture flex and cleaned the lens for $192. This is why it is difficult to focus on a large white sheet of paper. The camera should not be closer than 50 times the focal length, except for with telephoto lenses longer than 200mm where you should set the camera 25 times the focal length away from the target. JP Danko is a commercial photographer based in Toronto, Canada. And a few notes about setting in camera adjustments: I set the “on camera” adjustments at zero. The Granary, Downs Court Good luck. Hello, The autofocus on my Canon 18-55mm is malfunctioning and I'm afraid it may be broken. (David also wrote a more detailed explanation on how to assemble the target here.). Torque it a bit in both directions as if mounting/dismounting without pressing the mount release. Its like its in manual miode which is not good. If you find that the subject in the image taken using autofocus looks softer than the one taken in live-view mode, you would need to tune the AF system. DSLR cameras utilize two methods to focus: one is phase detection and the other is contrast detection. Sigma autofocus issues. In the unlikely event that the inspection uncovers a potential problem, your lens will be modified and returned to you absolutely free of charge with the minimum of delay. can change a lens mid-rappel, swap a memory card while treading water, or use a camel as a light stand. 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