[Lvas] Found a new twist to the Hartman Mask

[Douglas Phillipson]

There is an incredible new development in the Hartman Mask, well it's 
new to me.  It was developed in 1997.  It allows you to determine which 
way to turn your focus knob, which can be challenging even with the 
standard Hartman Mask. Here is the article:

http://cometman.com/Mask.html

I think I'll make one today...

Doug P