>>2848464Smart thinking, Itali-anon. any slower than 1/100 and the blur would have ruined the photos.
You have found a great little niche. Keep photographing the martial arts events. Put them on your website. Print up flyers and hand them out at events. You can charge for copies of the photos and you'll get referral jobs. You can also plan a photography session where you take a "hero" pose of each person to sell on your website. My friend does this with a ballet school, pic related