[XLサイズ(X-PROシリーズ) soft blue 2]

[Lサイズ(Z-PROシリーズ) full blue 2]

The Cokin B2 full-coverage graduated blue is a 2 1/3-stop filter can be used to enhance dull, flat, or hazy skies. The filter is densest at one edge and graduates to clear across the whole Filer to the other edge. Great for situations where the whole scene requires blue enhancement but still needs a darker portion to compensate for bright sky.