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==Negative effects of motion blur== [[File:Three women in a taxi in Manhattan who said hello.jpg|thumb|A taxicab starting to drive off blurred the girls' faces in the image.]] ===Television=== In televised [[sport]]s, where conventional cameras expose pictures 25 or 30 times per second, motion blur can be inconvenient because it obscures the exact position of a projectile or athlete in [[slow motion]]. For this reason special cameras are often used which eliminate motion blurring by taking rapid exposures on the order of 1 millisecond, and then transmitting them over the course of the next 30 to 40 milliseconds. Although this gives sharper slow motion replays, it can look strange at normal speeds because the eye expects to see motion blurring and is not provided with blurred images. Conversely, extra motion blur can unavoidably occur on displays when it is not desired. This occurs with some video displays (especially [[Liquid-crystal display|LCD]]) that exhibits motion blur during fast motion. This can lead to more perceived motion blurring above and beyond the preexisting motion blur in the video material. See [[display motion blur]]. Sometimes, motion blur can be removed from images with the help of [[deconvolution]]. ===Video games=== In video games the use or not of motion blur is somewhat controversial. Some players claim that the blur actually makes the game worse, as it does blur images, making it more difficult to recognize objects (especially so in fast-paced moments). This does become more noticeable (and more problematic) with a reduction in framerate.<ref name="PC Gamer 2023-05-10">{{cite web|url=https://www.pcgamer.com/why-people-hate-motion-blur-in-videogames/|title=Why you're right to hate motion blur in games (but devs aren't wrong to include it)|last=Wilde|first=Tyler|date=10 May 2023|website=[[PC Gamer]]|access-date=21 October 2023}}</ref> Improvements in the visual quality of modern post-process motion blur shaders as well as a tendency towards higher [[frame rate|framerate]]s have lessened the visual detriment of undersampled motion blur effects.<ref name="PC Gamer 2023-05-10" /> ===Wind turbines=== Birds cannot properly see the swirling blades of wind turbines and can get struck by them fatally. A newly published report from Norway suggests that painting one of the three blades with a black tip makes the blades more visible and hence more avoidable. This reduces the motion blur of the unpainted blades, and cuts bird deaths by up to 70 percent.<ref>{{Cite news|date=2020-08-26|title=Black turbine blade 'can cut bird deaths'|language=en-GB|work=BBC News|url=https://www.bbc.com/news/science-environment-53909825|access-date=2020-12-20}}</ref> ===Aerial mapping/surveying=== During aerial mapping an aircraft or drone is used to take pictures of the ground during flight. If the flight speed is too high or if shutter speeds are too long, this can lead to motion blur. Motion blur reduces the quality of the images and has a negative effect on the mapping products. Motion blur can be avoided by adjusting the flight altitude, flight velocity, or shutter speed. <ref>{{Cite web|last=richard-hann|title=Preventing motion blur in drone mapping β Richard Hann|date=7 October 2021 |url=https://www.ntnu.no/blogger/richard-hann/2021/10/07/preventing-motion-blur-in-drone-mapping/|access-date=2021-10-11|language=en-GB}}</ref>
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