May 2021 : Freeze the Motion
Generally speaking, there are 2 photography techniques to freeze the motion: “use a fast shutter speed” or “use a fast flash duration”.
A fast shutter speed is typically whatever it takes to freeze action. If you are photographing birds, that may be 1/1000th second or faster. However, for general photography of slower-moving subjects, you might be able to take pictures at 1/200th second, 1/100th second, or even longer without introducing motion blur. For modern cameras, the shutter speed can be set up to 1/8000th second, which should be fast enough to freeze most the move objects. However, using such a fast shutter speed requires a lot of environmental light (like sunlight), and typically it can only be done outdoor. Otherwise, you will end up with underexposed photos.
Flash duration is one of those terms you hear in the world of flash photography but may not know exactly what it is, or why it matters. It’s really quite simple, and pretty much exactly what it sounds like. The measurement of time from when the flash begins to fire until it’s completely off is what’s known as flash duration. Like a light bulb filament slowly burning off when it’s turned off, a flash tube does the same thing, but much quicker. The reason flash duration is important is because in certain situations where you can control the ambient light, it can act as your shutter speed. This allows you to freeze motion without exceeding your camera’s sync speed.
For members who never used fast shutter speed or flash, I recommend you to start with photographing the slow-moving birds (like ducks), moving cars/bikes or water droplets from your garden tap, etc. Just google “fast shutter speed photography”, “motion freeze photography” or “high speed photography” for more inspirations. Please let me know if you have any questions, I am looking forwards to seeing your results and hearing your stories by the end of this month.
- When to Use a Fast Shutter Speed
- Introduction to Shutter Speed in Photography
- An Explanation Of Flash Duration
- Using Flash Duration to Freeze Motion
Useful Youtube video links: