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...
Labs have always, “Made as ordered”. You order a 60 pd with 10D of prism, you will (should) get 10D at 60mm. Even in the old days, we never differed...