Why Your Flash Is Freezing Motion Or Flash VS Continuous Light

During last weekends workshop Posing Masterclass by Bambi Cantrell I joined the chat room for a couple of minutes and there was this discussion about shooting tack sharp images with slow shutter speeds.

The reason for this was Bambi’s statement that she could take tack sharp images with 1/4 of a second shutter speed. Handhold not with a tripod. And not with a short lens but with her Canon 70-200 2.8.

What made this really amazing was the fact that she could do this with continuous light.

While most of the chat members agreed that this would be not a problem while using flash there was one reaction that caught my attention.

It said: A quarter of a second is a quarter of a second whether you are using a flash or not!

When it comes to the time span the person was right. A quarter of a second indeed equals a quarter of a second.

But seemingly this member didn’t fully understand that it’s important to consider what is happening during this time span. This is by the way a common misconception for most of us. Because with a time span that short we tend to believe that there is not much happening during this period of time.

This is why I made this little video to explain what really is going on during this quarter of a second (or whatever shutter speed you want to fill in).

Have fun shooting.

Leave a Comment