Yes, I reference this often and it is where I pulled the ellipse image from. I think what I am looking for is the basis of Ostwalt's work and how it...
How does add affect the corridor (for want of perhaps a better term). We're all aware a +2 add vs a +3 add in a PAL is going to have reduced channel...
So I've always wondered.... What is up with the W. Wollaston base-curve lens series? It gets mentioned in almost any base curve tutorial without any...