Ever wonder how those funky aperture numbers ended up on your lens barrel? Or who chose those odd ƒ-numbers that run in the seemingly arbitrary 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32 sequence? And why does the biggest number refer to the smallest lens-hole?
Now, video sketching supremo Dylan Bennett is back to explain ƒ-stops to you. Grab a beverage, sit back and enjoy 15 minutes of easy-to-follow explanation. With drawings!