on a treadmill in my lab

Geregistreerd op: 02 Nov 2018 Berichten: 412

I have a fairly long history of working with high-speed (i.e., slow-motion) video. As a graduate student, I did my dissertation research in a lab that specialized in locomotor and feeding biomechanics of animals, and to do these types of studies, the ability to film at very high frame rates (200 frames/second and up) was a must. However, the NAC cameras we used in those Nike Air Max 90 Heren days priced easily in the 5-digit range (possibly even 6-digits), making the technology far too expensive Nike Air Max 90 Womens Pinkfor the average person wanting to play around with slow-motion video. Technology has come a long way in recent years, and cameras that can record at such high-frame rates have finally dropped into a price range where they are affordable to people not working in grant-funded academic research labs.Let me start by describing what exactly I mean when I refer to high-speed video. Most home digital video cameras shoot at a frame rate of ~30 frames/second (fps), which means that they essentially are taking 30 still photographs per second, then playing them back in in sequence such that they appear to form a seamless video. It turns out that 30 fps is sufficient enough to prevent us from being able to detect the gaps between images www.armagilus.fr with the naked eye when they are played back. However, if you were to slow down video taken with a Nike Internationalist Mujer regular camera (e.g., in a program like Virtualdub), you would notice a distinct “jumpiness” due to the gaps between images – the video would be far from smooth, and this is why you need a more capable camera when you wish to film fast action and play it back in slow motion.
My series of slow-motion running videos have sparked a lot of commentary on this blog, as well as a decent number of direct e-mails to me from readers (for an example, see this post looking at the effects of shoe type on footstrike). Most of these clips have been shot with a Casio Exilim EX-F1 digital camera. The EX-F1 is an amazing piece of electronics, and in terms of high-speed video capability, it does for about $1000 what historically could be done only Nike Air Max Classic BW Mens by far more expensive cameras. The Casio Exilim EX-F1 does a lot more than just high-speed video (e.Nike Air Max 95 Femmeg., HD video at 1080i, 60 high-res stills in one second in high-speed burst mode, plus a lot more – you can Adidas Superstar Femme read the full overview on Casio’s product page for the EX-F1), but that’s it’s primary use for me, it does it very well, and that’s what I’ll focus on here.The Casio Exilim EX-F1 can shoot high-speed video at 300, 600, or 1200 frames/second. As you increase filming speed, however, you get a loss of resolution as follow: 512 x 384 (300 fps), 432 x 192 (600 fps), 336 x 96 (1200 fps). That being said, the 512 x 384 resolution is more than suitable for my purposes, both personal and academic. The EX-F1 also has a variable 30-300 fps mode that allows you to toggle the movie recording speed between 30 fps and 300 fps on the fly. Nike Air Max 270 Femme This would allow you to switch between real-time and slow-motion as the need arises (think capturing Nike Air Max 90 Heren Zwart a baseball player sliding into a base). Below is a sample slow-motion video of Ryan Hall running in the 201Nike Air Vapormax Womens 0 Boston Marathon recorded by two of my students at 300 fps on the EX-F1You need a lot of light to get image clarity/quality with high-speed video cameras, and the EX-F1 is no exception. While shooting outside usually gives good results, I have to use halogen spotlights on subjects in my lab to get crisp images with this camera. In fact, the 1200 fps setting requires extremely well-lit conditions (and I mean very, very bright) to get a usable image. Below is an an indoor video of me running on a treadmill in my lab shot at 300 fps with the EX-F1 (be aware that there is some loss of quality when uploading to Vimeo) Confused

o, my experience so far with the Casio Exilim EX-F1 has been extremely positive, and for a small-college Nike Air Max Classic BW Womens researcher like myself, it’s an affordable option that allows me to still do many of the things I did in Adidas Superstar Dames graduate school at a large research institution. I’d say that If you have money to burn, or are in an academic or competitive athletic environment (e.g., biomechanics research), the Casio Exilim EX-F1 is a great choice for affordable high-speed video. As time allows, I’ll try to add some additional videos at 600 and 1200 fps for you to view, as well as one in HD.

Geregistreerd op: 06 Nov 2019 Berichten: 562