Formatt Hitech 100mmx100mm 4×4 inch Prostop IRND Kit of 3 0.3,0.6,0.9
Feature:
The Formatt-Hitech 100 x 100mm ProStop IRND Three Filter Kit contains three solid neutral density filters ranging from 0.3 to 0.9 ND (1-3 stop).
These filters provide a consistent and even reduction in light from reaching the film or sensor, allowing you to photograph with longer exposure times or larger apertures than normally required.
By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily.
The ProStop IRND filters have been optimized for use with digital sensors and promote nearly flat attenuation of both visible and infrared light.
Due to imaging sensors greater susceptibility to infrared light, compared to traditional film, color casts can occur when photographing darker subjects that require increased exposure times.
These filters provide a high level of neutrality across both spectrums in order to eliminate color casts and ensure cleaner, truer blacks.
These filters measure 3.9 x 3.9″ / 100 x 100mm, 0.12″ / 3mm-thick, and are constructed from specially dyed CR-39 optical resin.