Hoya ND4 HMC IN SQ.CASE 37 MM

The Hoya ND4 HMC IN SQ.CASE 37 MM is a neutral density filter for 37 mm lens threads that cuts incoming light by two f-stops, for photographers and filmmakers who need longer exposures or wider apertures in bright light.

• Filter size: 37 mm
• Neutral grey ND4 filter reducing light by two f-stops
• HMC anti-reflective coatings guard against unwanted reflections
• High light transmission helps contrast and colour saturation
• Allows longer exposure times when the aperture cannot be closed further or ISO lowered
• Allows wide apertures with fast lenses on sunny days, useful for portraits and film
• Helps match exposure on film cameras where exposure time cannot be adjusted
• Black ring, supplied in a square case