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The Formatt 52mm Hot Mirror/Neutral Density (ND) 0.9 HD Filter was created to deal and correct with infrared "noise". Today's digital cameras, with their ultra-sensitive sensors, are particularly susceptible to infrared contamination. This issue becomes magnified when using high density ND filters. This filter, with its steep cut-off of infrared light, allows a more natural picture without interfering with the red end of the spectrum.
When combined with HD technology, this filter becomes even more useful. The Hot Mirror coating becomes sandwiched within the glass and, therefore, is better protected from damage.
Neutral Density Filters - Determining which neutral density filter yields ideal results for any given lighting situation takes knowledge, experience and a collection of such filters. Speaking generally, the 2-stop value (ND 0.6) effectively compensates average situations.
HD technology has been targeted towards today's cinema and videographer who are using the latest ultra-sharp cameras and lenses.
Formatt, a company with three generations of professional filter-making experience produces every filter to the highest technical standards. The finest materials, together with state of-the-art production technology have resulted in a standard of optical excellence unmatched anywhere else.
Formatt's HD Neutral Density solid and graduated filters are available in all the popular round screw-in sizes, all the standard square sizes
All Formatt filters are finished with a unique edge frame offering maximum protection against chipping, surface scratches and enables easy handling and cleaning
With the filter description on top of the frame it also makes identification of the filter much easier especially when filters are stored in cases on location
Formatt HD Neutral Density filters have the same densities and light stops as the Kodak Wratten Standards
Formatt's Neutral Density Filters are a response to the many DPs and cinematographers who find that it is important to shoot as wide open as possible to minimize depth of field, especially with HD
Neutral Density Filters Have Four Main Uses
To enable slow shutter speeds to be used, especially with high speed films, 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
Neutral Density Factors
ND.3 (exposure adjustment = 1 stop, reduces ISO to 1/2)
ND.6 (exposure adjustment = 2 stops, reduces ISO to 1/4)
ND.9 (exposure adjustment = 3 stops, reduces ISO to 1/8)
ND1.2 (exposure adjustment = 4 stops, reduces ISO to 1/16)
In the Box
Formatt Hitech 52mm Hot Mirror/Neutral Density (ND) 0.9 HD Filter