Canon Rumors - Your best source for Canon news, rumors and creators

Quite frequently, Canon rumours publishes information on Canon lens patents.

Mostly these posts include a diagram showing lens elements in a number of groups, with arrows going backwards and forwards, along with a descriptions including positive and negative positive and negative positive.

Well it confuses the heck out of me.

Has anyone got a 'Understanding lens patents for Dummies' guide

In all seriousness, I'd like to know a bit more about lens design, so any guidance would be greatly appreciated.