Sigma Drop in WR Variable ND RND-21 300-600mm f4 DG OS - L-mount

Achieve stunning long exposures with this Sigma variable ND filter, 1-7 stops. Maintain image quality in bright light; Sigma's ND filter reduces light effectively. Enhance your 300-600mm f/4 lens with a dedicated drop-in neutral density filter. Control depth of field in video; this variable ND filter offers smooth adjustments. Enjoy worry-free shooting; water repellent coating protects this durable ND filter. Get creative with motion blur; this Sigma ND filter is easy to use for unique effects.