55Mm Nd +4 Hmc Neutral Density Filter Hoya series 7 adapter SIGMA is organizing all its

SIGMA is organizing all its interchangeable lenses into three product lines

High work load performance - up to 5 kg/11 lbs

and there is memo space beside each photo

Perfect for portraiture to reduce depth of field

55Mm Nd +4 Hmc Neutral Density Filter Hoya series 7 adapter SIGMA is organizing all itsIn conditions of extreme light intensity, such as sunshine on snowy mountains or on the beach, or when using a camcorder, ND (Neutral Density) filters are recommended as essential. Neutral Density filters are often ignored by photographers, but they have several uses and offer the possibility to achieve otherwise unachievable results. ND filters appear grey and reduce the amount of light reaching the film, they have no affect on color balance. The