I use a Tianya GND filter for landscape but I realize most of the time, the light difference between ground and sky are 4 stops and more, however Tianya can give 2 stops gradual change?
Does tianya carry this kind of hard edge GND with ~0, and -4 stops respectively?
http://en.wikipedia.org/wiki/Graduated_neutral_density_filter
Does tianya carry this kind of hard edge GND with ~0, and -4 stops respectively?
http://en.wikipedia.org/wiki/Graduated_neutral_density_filter
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