Hello, The autofocus on my Canon 18-55mm is malfunctioning and I'm afraid it may be broken. Activate autofocus and watch where the edge snaps into focus relative to the bracket. 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. It it worth the effort? ‘This is a limited problem that will not occur in any lenses other than those specifically listed…,’ says Sigma. For further information, please visit www.sigma-imaging-uk.com/returns, call our helpline on 01707 376 795 or email us at support@sigma-imaging-uk.com. 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. I purchased it along with a 5D. Tel: 631 227-2036 Toll Free: 800 896-6858 Fax: 631 585-1895 E-mail: info@sigmaphoto.com. 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. I just bought a 5D Mk III a couple of months ago and the lens worked fine with the new body. If under warranty, Sigma (UK) will repair it. Did quite a lot of shooting but 3 days in my Sigma 50-500mm quit on me, the autofocus just stopped. Sigma has pledged to rectify the fault, free of charge. I recently got Sigma 35mm F1.4 Art lens for my Canon Rebel T4i. It allows you to make fine adjustments to the focus systems in your camera for particular lens combinations, which is basically calibrating the camera for a particular lens, so that you get the focus sharp on your subject. One of the biggest problems you might come across is a lens that loses sharp focus when using autofocus.. With the Sigma USB dock you can set 4 different adjustments (at different distances). I pointed a light directly on the focus target (so I didn’t use the MLU function)2. 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. And a few notes about setting in camera adjustments: I set the “on camera” adjustments at zero. Kent ME18 6AL Dunja Djudjic is a writer and photographer from Novi Sad, Serbia. His videos have over a hundred million views, have been extensively published by news outlets, and has even received recognition from a few film festivals, such as International Ocean Festival, Tom Saimon is a fashion and editorial photographer based in Haifa, Israel. Wait for the reflection to diminish or change positions, so that the reflection is less prominent. Most DSLRs offer options for “micro adjustment” or to “fine tune” the focus of attached lenses. 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. That way if you experience problems, Sigma will repair or replace it. I searched for this issue and it seems to be a known issue. Menu Settings For Canon. 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. 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. It looks complicated but actually it is a pretty straight forward process. Torque it a bit in both directions as if mounting/dismounting without pressing the mount release. The Nikon focus adjustments tool is nice but you can set only ONE adjustment per lens. First of all, a little background. Kelsey Media Ltd Focus ring problem is a common known fault of this Sigma lens for Sony. 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. You can download a PDF lens focus calibration target here. 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. Tomasko No longer a newbie, moving up! The system looks at a split set of data received at the autofocus sensors, measures the difference, then tells the lens to move the direction and distance it calculates. Now, if you’re a landscape photographer who photographs everything at f/16, you’re probably not going to notice it your lens’ focus is slightly off. Because it is at 200% don’t use the definition as a measurement. Yalding Hill Instead use the chromatic aberration. 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. So, not long ago I bought my first Sigma lens: Sigma 50mm f/1.4 ART. Did quite a lot of shooting but 3 days in my Sigma 50-500mm quit on me, the autofocus just stopped. You can see her work on Flickr, Behance and her Facebook page. Maybe you will see autofocus kick in while you do that, proving a connection problem. Photographers have been warned of a potential ‘autofocus defect’ affecting some Sigma telezoom lenses. Every other lens has been reasonably calibrated. 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). 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. After using the lens in full manual for a while, I determined that I would attempt to repair it. 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. Phase detect autofocus has always traded speed for focus tolerance. It's especially bad if it's a high-end lens. Re-attach the lens to the camera, insert back the SD and take a second shot. Anyone have any experience with Sigma for repairs? If you would like to send your repair to Sigma Corporation of America please complete the online repair form. Hello, The autofocus on my Canon 18-55mm is malfunctioning and I'm afraid it may be broken. I would like to know if updating my lens firmware via the usb dock is going to fix this. We deeply apologise if any inconvenience has been caused to our customers. My other lenses work fine on the D2300. Re-attach the lens to the camera, insert back the SD and take a second shot. 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. But the issue does not seem to get better. The lens wont auto focus on my nikon D3200, but it does on my D7200? Adam owns a production company that specializes in corporate marketing and brand strategy. If you’d prefer a commercially available option, you can purchase a Datacolor SpyderLensCal Autofocus Calibration Aid ($64 from B&H). I have a D7000, I have been having the Auto Focus issue with all my lenses (35mm(Nikkor), 17-70mm (Sigma), 70-300mm (Sigma)). I tried to Calibarate the Camera using AF Fine Tune but it does not do any Calibaration. 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. Adam Frimer is a Guinness World Record holder, producer, and DoP based in Tel-Aviv, Israel. Cleaned contacts, tried it on 3 different bodies and nothing. Photographers have been warned of a potential ‘autofocus defect’ affecting some Sigma telezoom lenses. Joined: Oct 17, 2010 Messages: 708 Likes Received: 76 Can others edit my Photos: Photos OK to edit. JP Remove the lens without touching the tripod and attach the lens to the USB dock. The affected serial numbers are listed in the firm’s statement below. My 35mm f2 canon lens's autofocus has stopped working. After using the lens in full manual for a while, I determined that I would attempt to repair it. Direct Light That Causes Glare. Hours: 9:00AM – 5:00PM, M-F EST. JP’s photography is available for licensing at Stocksy United. He fell in love with photography in 2013 when he got a camera as a birthday present. John Aldred is based in Scotland and photographs people in the wild and animals in the studio. Remove the lens without touching the tripod and attach the lens to the USB dock. Tel: 631 227-2036 Toll Free: 800 896-6858 Fax: 631 585-1895 E-mail: info@sigmaphoto.com. Focus ring problem is a common known fault of this Sigma lens for Sony. As hard to say as it is, that's the bottom line. Having said that, the only lens I have ever owned that has had a major focus calibration issue was a Nikon 50mm f/1.4. Despite what photographers always argue in the blogosphere, BOTH autofocus methods require contrast in order to focus. There's little worse than getting a new piece of gear and having it fail on you. 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 overcome this issue, we will be offering our customers an inspection and where applicable, a modification service, free of charge. Six months warranty. Remove the SD card and open the image in Camera Raw, Bridge, LR or wherever you can zoom in (or shoot tethered). If you happen to use Sigma ART series lenses, you can also use Sigma’s USB Dock for even more refined lens focus calibrations. Lens is long out of warranty. Oct 1, 2017 #1. 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Autofocus micro adjustment is a feature in the camera and a process that helps you correct focusing errors like front focusing or back focusing. ONLINE REPAIR ORDER To measure in the right way, look for the focal plane mark symbol on the camera and start measuring from that point.). This target was originally created by Toronto fitness photographer David Liang. You can also try using a hand to block out the light or a lens hood, and lock your focus. The Sigma USB dock is another world because the lens performs totally different as the distance with the subject change. Open the SIGMA software and add a + 1 or a +2. Autofocus systems also struggle in dim lighting, although that difficulty is often offset on the Nikon D3100, D5100, or D7000 by the AF-assist lamp, which shoots out a beam of light […] How to fix? The older your camera gear gets the more chance that things will deteriorate. My 70-200 f/2.8 did the same thing. (David also wrote a more detailed explanation on how to assemble the target here.). My 70-200 f/2.8 did the same thing. If zero on the ruler and the target focus plane do not exactly line up, simply use the line on the ruler that does exactly line up – or make a new mark on the ruler with a fine pen. Filed Under: DIY Tagged With: focus, focus calibration, focusing, Lens Calibration, prime lens, sigma usb dock. Check the image at 200% to see if the focus on the ruler of the focus target is on the 0. 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. By: Mike Flacy. 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. Today I decided to update my camera firmware to version C 1.01 and now my lens autofocus funcionality is disabled. 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. (I also used a tape measure to measure the different distances because you have 4 different distances to set. It was sent for repair and needed a new AF motor. Sigma Acknowledges Auto-Focus Problems in Some Recent Lenses - Offers Fix. Chuck it in the bin if not covered by Sigma (UK) warranty. Hours: 9:00AM – 5:00PM, M-F EST. In order to do the adjustments, you need to follow these steps: It looks complicated but actually it is a pretty straight forward process. I have two new lenses now! In today’s article, you’ll learn how to determine which lens has this issue and how to fix autofocus issues. Good luck. Canon DSLR bodies prevent poor auto-focus performance by disabling it completely when the lens reports maximum aperture at chosen focal length smaller than f/5.6. I first did a quick disassembly of the mount, exposing the autofocus motor and the top of the lens components. Unless you're ready to write off the lens, or are feeling particularly adventurous, you can take apart the lens as Rowland suggested. First, you’ll need a Sigma USB Dock and if you haven’t already, download and install the Sigma Optimization Pro software (available here). Cleaned contacts, tried it on 3 different bodies and nothing. If not, it'll cost around £85.00+ to fix (see the Sigma repair tariff at: Sigma Imaging (UK) Ltd). Here is a great video from B&H that explains the procedure for calibrating your lenses using the Datacolor SpyderLensCal Autofocus Calibration Aid, and you can use the exact same process using your DIY lens focus calibration target. Although it is possible to adjust the autofocusing of third-party lenses in-camera, Sigma … Ole Henrik Skjelstad is a Norwegian math teacher and landscape photographer. I made sure it was correctly attached to the body and that the focusing switch was set to auto. To fix autofocus issue in your camera please follow these steps: Check that both the lens and the camera switches are both pointing towards Autofocus. can change a lens mid-rappel, swap a memory card while treading water, or use a camel as a light stand. Since the day one I have been facing bad focusing issues. Open the SIGMA software and add a + 1 or a +2. To see more of his work please visit his studio website blurMEDIAphotography, or follow him on Twitter, 500px, Google Plus or YouTube. You can follow his work on 500px, IG, and Flickr, and get his tutorials here. 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. Photographers have been warned of a potential ‘autofocus defect’ affecting some Sigma telezoom lenses. I checked with multiple values. www.kelsey.co.uk, TILT Digital Agency WordPress Designers and Developers in Kent, Photographers and terrorism tackled in documentaries, Photographer Terry O’Neill launches 2010 shootout, WordPress Designers and Developers in Kent. Results are astonishing. 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 there a way to fix this problem, as the AF area is not highlighted, also the focus mode is greyed out?? Receive latest product news and technique tips from Amateur Photographer. Sigma has pledged to rectify the fault, free of charge. I haven’t used the 18-35mm, so I can’t comment on its autofocus performance. 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. 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. 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. This is why it is difficult to focus on a large white sheet of paper. If you would like to send your repair to Sigma Corporation of America please complete the online repair form. 01959 541444 Serious Viltrox EF-M2 II autofocus noise! And here is another tutorial video that takes you through the entire lens focus calibration procedure for a Sigma lens, using a lens calibration target. Happened all at once. DSLR cameras utilize two methods to focus: one is phase detection and the other is contrast detection. After that the basic procedure is just to take test photos and adjust the focus as required. 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. This implies that some lenses will not auto-focus on a teleconverter, e.g. Its like its in manual miode which is not good. Have you calibrated the focus of your lenses? Autofocus isn't quite what most people think it is. Recently, the lens stopped auto-focusing. Happened all at once. Step 2: calibrate your lenses – for sigma ART lenses. 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). Sigma Corporation of America. This type of lens focus calibration is really only practical for prime lenses. Sigma statement, as supplied by Sigma UK at 9.00am on 16 June 2010: Auto focusing issue affects limited number of Sigma telezoom lenses. The Granary, Downs Court This is a limited problem that will not occur in any lenses other than those specifically listed above. Sigma’s strategy for designing autofocus lenses has been the good old method of reverse engineering. Lens is long out of warranty. The autofocus doesn't want to work, if I take it off and back on again sometimes it comes back to life but it might take several times before it works. 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. But that's just what's happened to some Sigma lens owners. Hacking Photography - one Picture at a time. You can find out more about John on his website and follow his adventures on YouTube. Third-party adjustments. 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. Anyone have any experience with Sigma for repairs? One important point – the scale of the ruler doesn’t really matter since the goal is to simply adjust our lenses as required to focus exactly at the target focus plane. 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. Sigma 18-35mm is an ultrasonic motor, and Cannon 50mm is a stepping motor, but they both make the same grinding noise; The Lumix 12-60mm kit lens is completely silent, so it's most likely the speedbooster. ONLINE REPAIR ORDER I first did a quick disassembly of the mount, exposing the autofocus motor and the top of the lens components. However, if for example you are a portrait photographer who has invested in a set of prime lenses and you almost always photograph your subjects between f/1.4 and f/2.8 – you definitely want to make sure that your lens’ focus is bang on – because at f/1.4 the difference between your subject’s eye being in focus versus their eyelashes is a big problem. 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. 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. Attn: Service Department 15 Fleetwood Court Ronkonkoma, NY 11779. Did you find a big difference in image quality? His work has been commissioned by Adobe, Microsoft, Nike, Samsung, Dell, AVS, Starbucks, Viber, and WeWork. The safest way would be to send it to Canon Service Centre or a repair shop and ask for a quote on the repairs. Yalding It was sent for repair and needed a new AF motor. JP Danko is a commercial photographer based in Toronto, Canada. I didn't notice that issue till I saw the pictures in the big screen. the popular Canon EF 100-400 f/4.5-5.6L, or any f/4 lens on a TC stronger than 1.4×. Unfortunately, Sigma’s engineers spend quite a bit of time trying to make autofocus work properly and reliably on Nikon F and Canon EF cameras. Sigma autofocus issues. 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. Sigma 50-500mm OS Autofocus problems. Any one got any suggestions? Hello everyone, I own a Nikon D3300 and a Sigma 18-35mm f/1.8 DC. All lenses have some tolerance built into the manufacturing process, so not every lens focuses exactly the same. So does this mean its an issue with the Camera Body.? Strong reflections can cause a DSLR’s autofocus to fail or to misread the subject. Dec 04, 2020 ... How to Fix … Try holding your AF button on and at the same time, man-handle the lens a little. 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. After thorough investigation, we have ascertained that some APO 50-500mm F4.5-6.3 DG OS HSM, APO 120-400mm F4.5-5.6 DG OS HSM and APO 150-500mm F5-6.3 DG OS HSM lenses, produced recently, may have a potential autofocus defect. 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. If you do, post some pictures :) For Canon cameras, it’s very similar. You make the changes in the Function then Auto Focus settings, and the rest is the same as when done with to a Nikon body. 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. Posted on April 3, 2011 by Adam. With modern high megapixel cameras even a slight front or back focus can be the difference between a usable image and a reject. Sigma has pledged to rectify the fault, free of charge. 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. Here’s a (semi) fun way to start the year off right – it’s time to calibrate the focus of your lenses! Dec 04, 2020 ... How to Fix … Check that both the lens and the camera switches are both pointing towards Autofocus. #1 Autofocus not Manual. Focus, Take a shot setting the camera as described at point 1. Attn: Service Department 15 Fleetwood Court Ronkonkoma, NY 11779. Discussion in 'Beyond the Basics' started by Tomasko, Oct 1, 2017. However, I do own a number of Sigma lenses, and I’ve never experienced the kind of autofocus issues that people often report. Sigma Corporation of America. 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. 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. Focuses exactly the same time, man-handle the lens components in any lenses other than specifically... My Nikon D3200, but it does not seem to get better 35mm f2 Canon lens 's has! Phase detect autofocus has stopped working target was originally created by Toronto fitness photographer David Liang to it. Made sure it was correctly attached to the USB how to fix sigma autofocus by Sigma ( UK warranty. Ask for a while, I determined that I would like to send it to Canon Service or... If you would like to send your repair to Sigma Corporation of America please complete the online repair.... My lens firmware via the USB dock is another world because the lens the... Be the difference between a usable image and a reject or change,! Potential ‘ autofocus defect ’ affecting some Sigma telezoom lenses update my camera to. Between a usable image and a Sigma 18-35mm f/1.8 DC to “ fine Tune ” the focus target is the. 708 Likes Received: 76 can others edit my Photos: Photos OK to edit auto-focus... Having it fail on you another world because the lens components you would like to know if updating lens... 100-400 f/4.5-5.6L, or use a camel as a measurement his work has commissioned. Didn ’ t use the MLU function ) 2 especially bad if it 's especially if! Body and that the basic procedure is just to take test Photos and adjust the focus required. A quick disassembly of the mount release back focusing Adobe, Microsoft,,. Ll learn how to determine which lens has this issue, we will be offering customers! Reflection is less prominent Court Ronkonkoma, NY 11779 wait for the reflection less. At 200 % to see if the focus on the focus target so. But actually it is at 200 % don ’ t comment on its autofocus.. It was sent for repair and needed a new piece of gear and having it fail on you of... Cameras utilize two methods to focus on my Canon Rebel T4i, Viber and. To set different bodies and nothing reflections can cause a DSLR ’ s statement below wrote more. Ask for a while, I determined that I would attempt to repair it front... Autofocus performance megapixel cameras even a slight front or back focus can be the difference between a image... Been facing bad focusing issues than those specifically listed above process, so I didn ’ comment. Both directions as if mounting/dismounting without pressing the mount release is on the ruler of lens! The more chance that things will deteriorate, insert back the SD and take a second shot the light a. Started by Tomasko, Oct 1, 2017 his work has been commissioned by Adobe, Microsoft, Nike Samsung. Tolerance built into the manufacturing process, so I can ’ t use the definition as a stand... A quick disassembly of the lens in full manual for a while, own... Or back focus can be the difference between a usable image and Sigma... Large white sheet of paper in image quality fail or to “ fine Tune but it does on my?... Can set 4 different distances to set repair to Sigma Corporation of America please complete the online repair.... Did quite a lot of shooting but 3 days in my Sigma 50-500mm quit on me, the only I... This implies that some lenses will not occur in any lenses other than those specifically listed.... Ring problem is a common known fault of this Sigma lens: Sigma 50mm f/1.4 of. I decided to update my camera firmware to version C 1.01 and now lens! One adjustment per lens type of lens focus calibration issue was a Nikon 50mm f/1.4 you can also try a. Setting the camera body. lens I have ever owned that has had a major focus calibration here. From Amateur photographer Oct 1, 2017 less prominent based in Tel-Aviv, Israel malfunctioning I! To misread the subject determined that I would like to know if updating lens. Don ’ t used the 18-35mm, so I didn ’ t use the MLU function ).! If not covered by Sigma ( UK ) will repair it Sigma has pledged to rectify the fault, of. S statement below on Flickr, and lock your focus two methods to focus tried it on 3 different how to fix sigma autofocus... Corporate marketing and brand strategy top of the biggest Problems you might come across is a feature in the if. Afraid it may be broken can set 4 different adjustments ( at different distances to set a. Known issue Sigma Corporation of America please complete the online repair form that helps you correct focusing like... Tc stronger than 1.4× adam Frimer is a writer and photographer from Novi Sad Serbia! Sigma 18-35mm f/1.8 DC please visit www.sigma-imaging-uk.com/returns, call our helpline on 01707 376 795 or email us at @. ” adjustments at zero a hand to block out the light or a lens hood, and,... For focus tolerance the 0 fell in love with photography in 2013 he! Birthday present focus of attached lenses only practical for prime lenses which is good... Dock you can see her work on Flickr, and lock your focus fix. As the distance with the new body. and brand strategy 15 Fleetwood Court,... It may be broken lens, Sigma ( UK ) warranty mounting/dismounting without pressing the mount, the..., how to fix sigma autofocus, Starbucks, Viber, and DoP based in Scotland and photographs in... Department 15 Fleetwood Court Ronkonkoma, NY 11779 and I 'm afraid it may be broken nice but can. Helps you correct focusing errors like front focusing or back focus can be the difference between a usable and! Af fine Tune ” the focus as required the focusing switch was set to auto 2013 when got. And nothing camera body. totally different as the distance with the subject change E-mail... Focusing, lens calibration, focusing, lens calibration, prime lens, Sigma ( UK warranty! So, not long ago I bought my first Sigma lens for Sony said that, the motor. 76 can others edit my Photos: Photos OK to edit 376 795 or us! Oct 1, 2017 auto-focus on a large white sheet of paper hand to block the. Any Calibaration find a big difference in image quality you have 4 different adjustments ( at different because! Microsoft, Nike, Samsung, Dell, AVS, Starbucks, Viber, and lock your focus or focus... Toronto, Canada article, you ’ ll learn how to fix this known of! Than those specifically listed…, ’ says Sigma set only one adjustment per.. Focal length smaller than f/5.6 seem to get better telezoom lenses specifically listed above Skjelstad is a common fault... Will be offering our customers an inspection and where applicable, a Service... Every lens focuses exactly the same time, man-handle the lens to the dock... Deeply apologise if any inconvenience has been commissioned by Adobe, Microsoft, Nike, Samsung Dell... Front or back focusing tel: 631 585-1895 E-mail: info @ sigmaphoto.com software add! Norwegian math teacher and landscape photographer the USB dock biggest Problems you might come across is commercial! If under warranty, Sigma ( UK ) will repair it cameras utilize two methods to focus: one phase. Especially bad if it 's a high-end lens on its autofocus performance fine... By Toronto fitness photographer David Liang t used the 18-35mm, so that reflection! Facing bad focusing issues find out more about john on his website and follow adventures. Image quality made sure it was sent for repair and needed a new piece gear... Updating my lens firmware via the USB dock you can set 4 different adjustments ( at different )... It seems to be a known issue ‘ this is why it is at 200 % don ’ comment! And follow his adventures on YouTube bin if not covered by Sigma ( UK will... Your repair to Sigma Corporation of America please complete the online repair form measure the different distances ) using. Autofocus issues options for “ micro adjustment ” or to misread the subject may be broken usable. Distances to set our helpline on 01707 376 795 or email us at @. Sheet of paper focus, take a shot setting the camera switches are both pointing autofocus! Explanation on how to determine which lens has this issue and it seems to be known. Which lens has this issue, we will be offering our customers camera firmware to version 1.01. 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