Print at Jan 11, 2026, 10:08:30 PM

Posted by hansmex at Jun 18, 2013, 6:48:18 PM
Re: aperture angle of light
Maurizio,

Download this file. It's an umbrella, or rather a parabolic dish. Make it long and narrow, hide a light source in it. Ready!

Hans
----------------------------------------
Hans

new website - under constuction
hansdirkse.info