Take Lots of Group Photos


In 2006 a pair of mathematicians, Nic Svenson and Piers Barnes of the Australian Commonwealth Scientific and Research Organization, determined the number of photos you needed to take of a group to ensure that one photo had everyone’s eyes open.They even won an Ig Nobel Prize in Mathematics for their work.

Severson and Barnes combined the average frequency and time of blinking with some basic statistics. It turns out the for groups less than 20, divide the number of people by three in normal light, or two in low light. So, the next time you are taking photos of a group, take a few extra photos and there is a good chance that one of them will have everyone’s eyes open.

For the more details on this calculation see Blink-free Photos Guaranteed.

About Mark Mizen

At Creative Memories, I evaluate photographic products and related materials so that today's memories are not lost to the future and then communicate this information to Creative Memories Consultants and their customers. My interests extend from preservation of traditional photographs to the production of photo books to the expected longevity of electronic image files. My long-term objective is to direct the development of technology that meets consumers needs for high-quality products.
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