Lee Seven5 .6 Neutral Density Grad - Hard Brand_Sigma an aspherical lens element

an aspherical lens element

sharp noises coming from whatever you're filming

aspherical lens elements maintain high contrast (even with the aperture wide open) and minimize distortion and flatness of the image plane

They are exceptionally useful for macro photography

Lee Seven5 .6 Neutral Density Grad - Hard Brand_Sigma an aspherical lens elementNeutral Density (ND) Graduated Filters enable the photographer to selectively adjust exposure across the frame without affecting colour balance. They are almost an essential in modern landscape photography on both digital and film cameras and come in a range of strengths denoting the light stopping power of the filter.