Memorializing the groundbreaking achievements made by Tiffen's founder, Nat Tiffen, the Tiffen NATural Neutral Density Filter Line provides game changing improvements on neutral density filtration. With perfect neutrality across the visual and IR spectrum, resulting in unmatched color fidelity, these glass filters represent a new era of ND and IRND filtration, and these technological advancements make the NATural's the ideal choice for cinematic and photographic production.