What is a centerfold photograph?

Answer 1

A photo that is printed on paper slightly less than three times wider than the page width of the magazine it's going into - if the book is 8-1/2" x 11, a good width for a centerfold would be 24-1/2". This will keep the centerfold from getting cut up when the magazine is trimmed.

The centerfold is a really good picture of whatever the magazine is about. Most magazines with centerfolds are "men's" magazines (aka porno magazines) and the picture in that case would be of a nude woman, but you could put a centerfold of a car in a car magazine, one of a dog in a dog magazine, or whatever. It is really expensive to put centerfolds in magazines because of the extra handling involved, so you usually only see them in porn magazines, but nothing besides money keeps people from putting centerfolds of fish in aquarium magazines.