The RF75 ProGlass Standard Neutral Density (ND) 0.9 Filter from Lee is an interesting filter that is designed to absorb many kinds of light - visible, UV and IR (infrared). This filter, because of its unique design makes an excellent choice for the digital market. Digital sensors, being sensitive, will appreciate this. In addition, the results will produce a 'snappy', crisp image you will be proud of.
A neutral density filter is gray in appearance and helps reduce the amount of light reaching the digital sensor or film plane when shooting under bright light conditions. It permits the use of wider apertures, slower shutter speeds that help create dramatic effects such as the movement of a waterfall or the hectic feeling of a traffic pattern. This filter will help many types of photography especially portraits where the wider apertures made possible will allow you to create more separation of foreground and background.
The Lee RF75 Rangefinder Filter Holder System offers a small, portable, flexible filter system to users of all camera formats. From small, high-end digital cameras to users of mirrorless cameras (as long the lenses have threads), the RF75 is designed with a lightweight and compact design making it a perfect choice for outdoor shooting. The system holds filters sized 75 x 90mm.
Note: RF75 Filter Holder sold separately
Since 1978, Lee filters have been world recognized in the photo, video, TV and cinematic industries. They make a wide variety of filters for all lighting and shooting scenarios. All their filters are handmade and inspected to the highest standards. If you mention the word "Lee" to anyone who knows anything about photography, they will immediately know you are using a quality product
Neutral Density Filters Have Four Main Uses
To enable slow shutter speeds to be used, especially with high speed ISOs, to record movement in subjects such as waterfalls, clouds, or cars
To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background
To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situations
To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure
ProGlass Neutral Density
75 x 90mm - Fits RF75 Filter Holder 2mm thick
0.9 - 3-stops
Reduces ISO 1/8
Reduce the amount of light reaching the film place or digital sensor