GamColor CTO (Color Temperature Orange/Neutral Density filters are deep dyed polyester color filters with superior color medium for use with all types of light.
The benefit of the CTO/ND combination is that it permits you to not only reduce the light level reaching your film but also decreases the color temperature of your supplemental light. If you were shooting in a department store with huge windows and needed to reduce the intensity of the sunshine filtering through, this filter would be appropriate. It would also correct for the temperature of any incandescent lighting you may experience.
Note! GamColor CTO/ND filters are available in three steps .3, .6 and .9 each combined with full CTO
GCB1558 #1558 CTO/ Neutral Density (ND) .9 Cine Filter (48"x25' Roll)