The idea behind the RF-75 system was to have a smaller filter and holder, which would allow the viewfinder to be free of obstructions when positioned on the lens. As a result, framing adjustments can be made once the filter system is in place. The smaller size means less weight, which suits the type of camera on which it will be used.
It is quick to use, allowing the photographer to respond to rapidly changing conditions. Like all LEE Filters products, the RF-75 system is equally at home on film and digital cameras. Above all, it has been designed by photographers for photographers.