Cotech 0.15 Neutral Density Reduces light Half stop without changing colour

1" Core
1.22mtr x 7.62mtrs (48" x 25ft)1.524mtrs x 6.09mtrs (60" x 20ft)

 
DATAL*85.92
a*-0.02
b*2.38 %Y67.83
x0.3148
y0.321