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 width, does the NAL also experience a similar...
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 further satisfactory explanation. You mean to...
The day after I posted the question I found an...
The day after I posted the question I found an ancient PD stick in my lab that says MARCHON on one side and MARCOLIN on the other.
AngeHamm 03-28-2024, 01:38 PM