This is a Neutral Density Filter used for Cinematography. It has a Neutral Density of 0.9 (3 stops) and therefore reduces transmission by 87.5%. A common use for this filter is to allow the use of larger apertures, reducing depth of field, to allow selective focus and rack focus.
|Size||4 x 5.65" (100 x 140mm, 4mm thick)|
|Filter Factor||Increase exposure by 3-stops - Transmits only 13% of light|
|Effect||Reduce the amount of light reaching the film|
|Application||Nature, travel, outdoor photography|
|Color Temperature||Not Specified by Manufacturer|
|Construction||Water White Glass|
|Front Filter Thread Size||Not Applicable|
|Front Lens Cap Size||Not Applicable|
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