Posts Tagged ‘heptagons’

Heptagons Galore!

April 16, 2008

I’ve been looking for regular heptagons lately, ever since I discovered them in cookie-cake lids and pill-boxes, Harry Potter tokens, coins, and architecture. It turns out that there are a whole host of regular heptagons over on flickr, which makes me happy.

One vivid example that occurs in photography is flares in the shape of heptagons, as in the photo below by theilr. This occurs because of the shape of the aperture, and different lens designs will produce different polygons. This photo was taken with a Nikon D50; our old Pentax, on the other hand, produces pentagon flares.

Backlit leaves with heptagon flares from the camera

All rights reserved. Photo used with permission.

Click to see many more real-life examples of regular heptagons!