Formatt 4x5 IR ND Filters
IR, visible, UV wavelength attenuation
Permits use of reduced shutter speed
The Formatt-Hitech 4 x 5.65" Firecrest ND Filters provide a reduction in exposure from 4 to 6 stops. By darkening the entire image, you can photograph with a wider aperture or slower shutter speed than normally required for greater control over focus, movement, and brightness.
4x5.65 IR neutral density filter