Cokin Z125 Filter, Z-pro, Grad Tobacco T2 Full Z124 - T1 graduated tobacco filter reduces the light 1 stop. Z125 - T2 graduated tobacco filter reduces the light 3 stops. Z125L - 2X Light starts with the same density as P124, but feathers the tobacco almost from the color edge and more gently graduates to clear. One stop of compensation. Z125S - 8X Is the same density of color as P125M but the graduation extends to 3/4 of the filter. Requires 3 stops. Z125F - 8X Full is the same as P125S except that the tobacco covers the entire filter. Requires 3 stops.