B+W Bay 50 Blue KB6

This nearly medium blue conversion filter neutralizes the strong red tendency of light at sunrise or sunset out in the open when the original colors of the subject are wanted instead of a warm morning or evening mood. In addition, the KB 6 filter is ideal for “under-corrected” filtering of artificial light photographs on color negative films. When filtration is performed only later during printing, there is a visible color shift, and full correction leads to a higher loss of light. Its filter factor is approximately 1.5.