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B + W 67mm XS-Pro Vario Neutral Density MRC Nano Filter - 0.3 to 1.5 (1 to 5 Stops)
B+w ND Varo (1 to 5 stop) MRC filter reduces the amount of light entering the camera lens by one to five full f-stops. The amount of stop loss is controlled by turning the rotating filter ring. This allows an increase in depth of field by enabling you to open the lens One to five f-stops or one to five stops slower shutter speed without changing camera ISO/ASA setting. For example if you can achieve proper exposure at 1/60th shutter and F/5.6, then the b+w ND Varo will allow you to achieve 1/60th at f/4

Price is $

Price: $252