par4fore wrote:
https://www.google.com/search?newwindow=1&source=hp&ei=s1FGWr66BIGxggfRr4SYDQ&q=What+is+a+Defocus+Lens+%3F&oq=What+is+a+Defocus+Lens+%3F&gs_l=psy-ab.3..0i22i30k1l2.2581.2581.0.5786.3.2.0.0.0.0.87.87.1.2.0....0...1c.2.64.psy-ab..1.1.86.0...49.mfMzlbihi7k
Thank you.