The lens wont auto focus on my nikon D3200, but it does on my D7200? 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. But that's just what's happened to some Sigma lens owners. We deeply apologise if any inconvenience has been caused to our customers. I first did a quick disassembly of the mount, exposing the autofocus motor and the top of the lens components. Dunja Djudjic is a writer and photographer from Novi Sad, Serbia. First, you’ll need a Sigma USB Dock and if you haven’t already, download and install the Sigma Optimization Pro software (available here). So, not long ago I bought my first Sigma lens: Sigma 50mm f/1.4 ART. You can also try using a hand to block out the light or a lens hood, and lock your focus. 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. I recently got Sigma 35mm F1.4 Art lens for my Canon Rebel T4i. Remove the lens without touching the tripod and attach the lens to the USB dock. Lens is long out of warranty. Hello, The autofocus on my Canon 18-55mm is malfunctioning and I'm afraid it may be broken. Receive latest product news and technique tips from Amateur Photographer. However, I do own a number of Sigma lenses, and I’ve never experienced the kind of autofocus issues that people often report. It was sent for repair and needed a new AF motor. 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 implies that some lenses will not auto-focus on a teleconverter, e.g. Dec 04, 2020 ... How to Fix … It was sent for repair and needed a new AF motor. 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. His work has been commissioned by Adobe, Microsoft, Nike, Samsung, Dell, AVS, Starbucks, Viber, and WeWork. Sigma has pledged to rectify the fault, free of charge. Focus ring problem is a common known fault of this Sigma lens for Sony. Dec 04, 2020 ... How to Fix … How to fix? To measure in the right way, look for the focal plane mark symbol on the camera and start measuring from that point.). All lenses have some tolerance built into the manufacturing process, so not every lens focuses exactly the same. Check the image at 200% to see if the focus on the ruler of the focus target is on the 0. Adam owns a production company that specializes in corporate marketing and brand strategy. Sigma Corporation of America. 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. Menu Settings For Canon. Adam Frimer is a Guinness World Record holder, producer, and DoP based in Tel-Aviv, Israel. You can follow his work on 500px, IG, and Flickr, and get his tutorials here. 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. 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. 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. 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. If you would like to send your repair to Sigma Corporation of America please complete the online repair form. After using the lens in full manual for a while, I determined that I would attempt to repair it. Tomasko No longer a newbie, moving up! 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 find out more about John on his website and follow his adventures on YouTube. You can see her work on Flickr, Behance and her Facebook page. 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. The safest way would be to send it to Canon Service Centre or a repair shop and ask for a quote on the repairs. Try holding your AF button on and at the same time, man-handle the lens a little. 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. With modern high megapixel cameras even a slight front or back focus can be the difference between a usable image and a reject. This target was originally created by Toronto fitness photographer David Liang. 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. After using the lens in full manual for a while, I determined that I would attempt to repair it. So does this mean its an issue with the Camera Body.? Direct Light That Causes Glare. 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. 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. My other lenses work fine on the D2300. With the Sigma USB dock you can set 4 different adjustments (at different distances). I haven’t used the 18-35mm, so I can’t comment on its autofocus performance. This is a limited problem that will not occur in any lenses other than those specifically listed above. Phase detect autofocus has always traded speed for focus tolerance. My 35mm f2 canon lens's autofocus has stopped working. First, you’ll need a Sigma USB Dock and if you haven’t already, download and install the Sigma Optimization Pro software (available here). This is why it is difficult to focus on a large white sheet of paper. 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. Focus ring problem is a common known fault of this Sigma lens for Sony. Step 2: calibrate your lenses – for sigma ART lenses. JP Danko is a commercial photographer based in Toronto, Canada. 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. Sigma statement, as supplied by Sigma UK at 9.00am on 16 June 2010: Auto focusing issue affects limited number of Sigma telezoom lenses. (I also used a tape measure to measure the different distances because you have 4 different distances to set. Anyone have any experience with Sigma for repairs? can change a lens mid-rappel, swap a memory card while treading water, or use a camel as a light stand. This type of lens focus calibration is really only practical for prime lenses. Happened all at once. Sigma 50-500mm OS Autofocus problems. Happened all at once. Although it is possible to adjust the autofocusing of third-party lenses in-camera, Sigma … Because it is at 200% don’t use the definition as a measurement. 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. DSLR cameras utilize two methods to focus: one is phase detection and the other is contrast detection. One of the biggest problems you might come across is a lens that loses sharp focus when using autofocus.. Third-party adjustments. Despite what photographers always argue in the blogosphere, BOTH autofocus methods require contrast in order to focus. Open the SIGMA software and add a + 1 or a +2. 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). My 70-200 f/2.8 did the same thing. John Aldred is based in Scotland and photographs people in the wild and animals in the studio. ‘This is a limited problem that will not occur in any lenses other than those specifically listed…,’ says Sigma. Focus, Take a shot setting the camera as described at point 1. Autofocus micro adjustment is a feature in the camera and a process that helps you correct focusing errors like front focusing or back focusing. Maybe you will see autofocus kick in while you do that, proving a connection problem. I purchased it along with a 5D. 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 […] The affected serial numbers are listed in the firm’s statement below. For Canon cameras, it’s very similar. In order to do the adjustments, you need to follow these steps: It looks complicated but actually it is a pretty straight forward process. 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. I have a D7000, I have been having the Auto Focus issue with all my lenses (35mm(Nikkor), 17-70mm (Sigma), 70-300mm (Sigma)). Lens is long out of warranty. Yalding Hill Kent ME18 6AL Sigma’s strategy for designing autofocus lenses has been the good old method of reverse engineering. If not, it'll cost around £85.00+ to fix (see the Sigma repair tariff at: Sigma Imaging (UK) Ltd). As hard to say as it is, that's the bottom line. Six months warranty. There's little worse than getting a new piece of gear and having it fail on you. I didn't notice that issue till I saw the pictures in the big screen. 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. Sigma has pledged to rectify the fault, free of charge. I would like to know if updating my lens firmware via the usb dock is going to fix this. I tried to Calibarate the Camera using AF Fine Tune but it does not do any Calibaration. Cleaned contacts, tried it on 3 different bodies and nothing. If there a way to fix this problem, as the AF area is not highlighted, also the focus mode is greyed out?? Check that both the lens and the camera switches are both pointing towards Autofocus. 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. Activate autofocus and watch where the edge snaps into focus relative to the bracket. 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. The older your camera gear gets the more chance that things will deteriorate. It it worth the effort? Since the day one I have been facing bad focusing issues. I first did a quick disassembly of the mount, exposing the autofocus motor and the top of the lens components. Cleaned contacts, tried it on 3 different bodies and nothing. I made sure it was correctly attached to the body and that the focusing switch was set to auto. 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. 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