Matt Robinson and Tom Wrigglesworth, two designers from London worked together on a project to measure the ink usage efficiency of common typefaces. They used ballpoint pens to write out large scale fonts and then let the remaining ink demonstrate the efficiency of that typeface.
A selection of the most commonly used typefaces were compared for how economical they are with the amount of ink which they use at the same point size. Large scale renditions of the typefaces were drawn out with ballpoint pens, allowing the remaining ink levels to display the ink efficiency of each typeface.
And the winner is…Garamond, my « Sayf » typeface ! Yes !