Originally posted by Edvinas I know nothing about publishing industry but I know that 3:2 aspect ratio was chosen not accidentally. It's 3:2 because of Golden Rectangle. Also most of photopaper in Europe is closer to 3:2, generally you don't need to crop 3:2 picture, but those who are using Olympus and digicams need to crop all their photos to 3:2.
I don't print much but I don't want 4:3 or 5:4 sensor. 3:2 photographies look much better to me.
The 2:3 ratio
was, in fact, by chance. It was simply putting two movie frames together, since 35mm film started out as movie stock.
I don't know where you get the Golden Rectangle idea, but the A sizes of paper are a much more pleasing shape. Also note that cutting an A3 in half gives you two A4 sheets with no waste.
Go to a museum and look at the classic paintings. You'll find that most of the portraits and paintings are not quite so long and narrow. It's just not that pleasing a format.