The Tiffen 4 x 5.65" Clear Solid Gold 1 Filter is part of Tiffen's award-winning series of colour filters and is one of the most widely used. They enhance reality, adding a touch of subtlety or drama to the image. This filter gives you the ability to add more "punch" to an otherwise ordinary scene. Tiffen filters give you the control you need to create a scene rather than simply photograph it. The Soft or Hard label indicates the degree of colour graduation. Whether at Pro or Photo 1 level, Tiffen filters have always been the industry's first choice. - Add colourful excitement to a dull sky - Change the specific colour of a scene to create a desired special effect - Enhance existing colour or create subtle colour drama - Create a more balanced exposure in uneven lighting conditions ColorCore Technology - Tiffen filters are manufactured using ColorCore technology, a closely guarded proprietary process that permanently laminates the filter material between two pieces of optical glass which are polished to tolerances of one ten-thousandth of an inch, then mounted in precision metal rings - The ColorCore process allows Tiffen to control the colour and density of their filters, as well as the characteristics of special effects filters with far greater precision than typical mass-tinted filters, which typically exhibit colour and density variations. Superior Quality - Hollywood's major film studios rely on Tiffen filters for their multi-million pound productions - Superior quality and design make Tiffen the overwhelming choice of filmmakers, professional photographers and even NASA - Tiffen has also received an Emmy from the Academy of Television Arts and Sciences for excellence in engineering Specifications