space shuttle discovery in space

Space Shuttle Discovery Launchfox10078Mar 21, 02:41 PMI'm looking to get a grey card, The one I'm looking at says its for digital photography, Would it work the same for video? Link Below. Any help is much appreciated http://www.amazon.com/Opteka-Premium-Reference-Quick-Release-Photography/dp/B001G04VJO/ref=pd_sxp_f_pt Space Shuttle Discoverydesignguy79Mar 8, 08:11 AMCool, I will try it out.