3 Tips for Dealing With Rolling Shutter

first_imgThe term “Fix It In Post” has become a cliche at this point, but when it comes to rolling shutter, sometimes it actually is the best option. Depending on the severity of the rolling shutter artifacts, you may be able to fix the image during post-production by using any number of different plug ins for various NLE systems or compositing software. There are dozens of options out there, so I would recommend doing a quick google search to see which tools work best for your camera and software combination. Here’s a video tutorial from TheHowToMac  that demonstrates how to reduce rolling shutter in Final Cut Pro X. With all of that said, I would never rely on fixing your rolling shutter in post. The best results will always be achieved by avoiding rolling shutter artifacts in the first place. But if you are in a sticky situation, it’s great to know that there are some editing tools that can help you deal with these problem shots. If you’re interested in more info on shutters, rolling or otherwise, check out these articles from the PremiumBeat Blog.FCPX Video Tutorial: How to Fix Rolling ShutterHow to Repair Rolling Shutter in Adobe Premiere ProHow Do Camera Shutters Work?How do you deal with rolling shutter issues? Got any tips for your fellow filmmakers and videographers? Share your thoughts in the comments below. DSLR video has improved dramatically over the last few years, but rolling shutter is still an issue. Deal with it using these three tips.No one likes the look of rolling shutter artifacts. They’re a pesky side effect of shooting on DSLRs (or other cameras using CMOS sensors) and have the potential to ruin otherwise fantastic footage. Rolling shutter issues can plague footage in any number of ways, but most often by causing a horizontal skew when whip panning, or the “jello effect” when shooting on long lenses (or handheld). Here’s an example of the jello effect:Rolling shutter skew is simply a result of the speed at which a frame is scanned and captured on a CMOS sensor. Unlike global shutters, which capture an entire frame all at once, a rolling shutter will scan the frame from top to bottom, leaving room for visual artifacting in the frame.In other words, the top and bottom points of any given frame are not captured at the exact same moment, which is why images can appear skewed under certain circumstances.This can be seen in the image below.Image from EngadgetYou might wonder why more manufacturers don’t use global shutter sensors on their cameras, and there are a number of reasons for this. In a nutshell, there is usually a tradeoff in terms of performance between rolling and global shutters. A rolling shutter has issues with skew and distortion (as touched on above), but can have better low light performance and dynamic range.On the other hand, the global shutter may never be able to achieve the same DR as its rolling shutter counterpart, but it would perform much better for handheld work, action scenes, and visual effects work.Image from DSLR Video CollegeVFX shots in particular can be very challenging to deal with when working with footage suffering from rolling shutter artifacts. For a VFX artist to do their work best, they need to be able to accurately track footage and match 2D/3D elements to the source footage – which can be a huge challenge when the source material isn’t stable enough.But even if you aren’t doing VFX work or shooting action sequences, you still need to be careful when shooting on a camera that is prone to rolling shutter problems. A handheld shot using a long lens can turn into complete jello under the wrong conditions, and the skew associated with any number of shooting situations can be a huge distraction in the editing room.The good news is that there are ways to offset the rolling shutter issues associated with many CMOS sensors. Here are three of the simplest ways to work around it:Use a RigImage from 2355 ProductionsThis first point applies most specifically to micro-jitters, which can be an issue with nearly any camera, but can be exaggerated by rolling shutter.Using any sort of stabilizer or rig will always be your best bet when it comes to minimizing micro-jitters. Obviously a tripod or monopod can work perfectly in most instances, but for handheld work things get a bit trickier. As you might imagine, using a shoulder rig is one of the best ways to eliminate rolling shutter (or at least reduce it significantly), but it needs to be set up just right.I have used some DSLR rigs that didn’t have enough counter weight or just weren’t built well enough to absorb some of the shock that would cause micro-jitters, and ultimately they weren’t much better than actually holding the camera. Rigs that are heavier but still well balanced are an absolute must for even the most basic handheld work.Alternatively, you might want to consider a small gimbal-based stabilizer like the Movi M5 (pictured above) or a device like the Nebula 4000. Or, if you are unable to use a rig for any reason, the next best thing would be to use a stabilized lens. Any lens with built-in image stabilization will decrease rolling shutter artifacts substantially, but a well-balanced rig is always going to give better results.Know Your AnglesImage from GSI EngineeringSometimes knowing how not to use a tool is just as valuable as knowing how to use it. Every camera has its limitations, whether in the areas of dynamic range, sharpness, detail, color accuracy, or otherwise. If your particular camera struggles with rolling shutter, then sometimes the best option is to work around its limitations and avoid shooting in situations where the camera is going to have issues.One example of this might involve shooting a moving train. If you were to point your camera at a train that is moving horizontally from screen left to screen right, the image would be very skewed, even if you weren’t moving the camera at all. Just like a whip pan, the sensor would be unable to read the entire image at once and would therefore cause a horizontal skew in the image.While you’re on set, the only option you have (other than shooting on a different camera) is to change your angle. Instead of shooting head on, you could opt to shoot from a 3/4 angle or any number of other positions that would help you avoid the skew entirely. It may feel frustrating that your creative choices are limited, but knowing your limitations will always help you get the best results and avoid issues down the road.Fix It in PostImage from the Connecticut School of Broadcastinglast_img read more

IPL 2011: Kochi aim for upset against Super Kings

first_imgThe stunning win over Mumbai Indians gave Indian Premier League new comers Kochi Tuskers Kerala the fillip they desperately needed and the side would be aiming to spring a surprise once again when they take on defending champions Chennai Super Kings in Kochi on Monday.Kochi upstaged Mumbai by a comprehensive eight wickets to clinch their maiden IPL win after facing defeats in their opening two matches.Captain Mahela Jayawardene said the win should now ensure that rivals take his team more seriously.The destructive Brendon McCullum came into his own against Mumbai and with some crucial support from Jayawardene and all- rounder Ravindra Jadeja, Kochi managed to pip Mumbai despite a century by their captain Sachin Tendulkar.” We have to keep fighting till the last. I think the rival teams will take us a little more seriously now following this victory.It gives us confidence as well,” Jayawardene had said after the shock win.The Sri Lankan veteran would hope for a similar performance from his team against Chennai at the Nehru Stadium.The bowling, however, is a big concern for Kochi as pace spearhead Sreesanth and spin wizard Muttiah Muralitharan have both been off colour, prompting Jayawardene to drop the duo in the match against Mumbai.RP Singh also continues to struggle to not just take wickets but also stem the flow of runs in the fourth edition of the league.R Vinay Kumar and Sri Lankan medium- pacer Thisara Perera can also expect to put through a tough test the formidable Chennai batting, bolstered by the return of Michael Hussey.advertisementBesides the prolific left- hander from Australia, Chennai, with the likes of skipper Mahendra Singh Dhoni, Suresh Raina, veteran New Zealander Scott Styris and South Africa’s Albie Morkel, have the firepower to bat any opposition out of the game.Chairman of selectors Kris Srikkanth’s son S Aniruddha has also been in good form this edition of the league.Chennai have had a fairly successful campaign winning two of their three matches far – the only defeat being result of Paul Valthaty’s brilliance with the bat.Their bowlers too have been putting up decent performances with Morkel, Tim Southee, Ravichandran Ashwin and Suraj Randiv sharing the wickets among themselves.Going into Monday’s match, Chennai certainly have the momentum but Kochi too have a spring in their stride after the win over Mumbai.And given the unpredictability of the Twenty20 format, doesn’t take much for change in momentum.last_img read more

Japan’s ‘Ninja Boy’ aims to take down Floyd Mayweather

first_imgHotel management clarifies SEAG footballers’ kikiam breakfast issue Japanese kickboxer Tenshin Nasukawa speaks to the media after a training session at his boxing gym in Matsuda, Chiba prefecture on December 18, 2018. – Japanese kickboxer Tenshin “Ninja Boy” Nasukawa said he wants to use the element of surprise to defeat boxing superstar Floyd Mayweather Jr in their bout later this month. (Photo by Behrouz MEHRI / AFP)Japanese kickboxer Tenshin “Ninja Boy” Nasukawa said Tuesday he wants to use the element of surprise to defeat boxing superstar Floyd Mayweather Jr in their bout later this month.“I want to kick his ass,” the 20-year-old baby-faced southpaw told reporters after a training session in the city of Matsudo near Tokyo.ADVERTISEMENT PH underwater hockey team aims to make waves in SEA Games PLAY LIST 02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games02:11Trump awards medals to Jon Voight, Alison Krauss LOOK: Joyce Pring goes public with engagement to Juancho Triviño Lacson: 2019 budget delay due to P75-B House ‘insertion’ View comments Sports Related Videospowered by AdSparcRead Next MOST READ He added that he suspected Mayweather was “not taking the bout seriously”.Nasukawa is considered something of a prodigy in Japanese fighting circles and began learning karate at the age of five.Like Mayweather, he is unbeaten, boasting a 28-0 record as a professional kickboxer with 21 wins by knockout. He has four wins from four matches in mixed martial arts.ADVERTISEMENT Is Luis Manzano planning to propose to Jessy Mendiola?center_img The New Year’s Eve bout, first announced in early November, was abruptly scrapped by the unbeaten 41-year-old American after a “misunderstanding” over the fight’s terms, according to mixed martial arts promoter RIZIN.But it was back on as an exhibition match after RIZIN chief Nobuyuki Sakakibara flew to Los Angeles for talks with Mayweather and agreed to an orthodox boxing match without kicking, which will be a disadvantage for Nasukawa.FEATURED STORIESSPORTSPrivate companies step in to help SEA Games hostingSPORTSSEA Games: Biñan football stadium stands out in preparedness, completionSPORTSUrgent reply from Philippine ‍football chief“I want to make surprising moves,” said the Japanese fighter, who has just returned from an intensive two-week boxing training in Las Vegas. “I want to fully use the kickboxing skills I have.”Nasukawa now weighs 61 kilograms and is is four inches (10 centimeters) shorter than Mayweather, who has won world titles in five different weight classes. SEA Games: Biñan football stadium stands out in preparedness, completion Private companies step in to help SEA Games hosting SEA Games: Biñan football stadium stands out in preparedness, completion Model-turned-fighter Rome Trinidad finds inspiration in Catriona Gray’s Miss U win LATEST STORIES Don’t miss out on the latest news and information. TS Kammuri to enter PAR possibly a day after SEA Games openinglast_img read more