HOYA PRO ND100000 77mmThe Hoya 67mm ProND 100000 Neutral Density 5. 0 Solar Filter provides a 16. 6 stop exposure reduction, and its 5. 0 density creates a darkening of the entire image with a 0. 001% transmittance that is effective for solar and solar eclipse photography. With this filter, users can capture photographs with a wider aperture or a slower shutter speed than normally required. The filter material provides an accurate neutral color rendition without any