Schneider 4x4" Gold # 3, Hard Edge Graduated Color Professional Glass Filter

It's the 4x4" Gold #3 Hard Edge Graduated Color Professional Glass Filter, a premium product from the renowned brand, Schneider, known for its commitment to quality and precision in photography equipment. This filter is designed to provide an overall warming effect, enhancing skin tones and accentuating the vibrancy of foliage in your images.

Expertly crafted from crystal-clear, water-white optical glass, each Schneider filter undergoes meticulous diamond cutting, grinding, and polishing processes to achieve precise flatness and plane-parallelism. This ensures an exact parallel relationship between the front and back filter surfaces, a feature verified by a laser interferometer for perfection.

The Schneider filters are also tested with a densitometer for consistent density and a spectrophotometer for optimal light transmission. This rigorous quality control process ensures ultra-high consistency, enabling photographers and cinematographers to interchange filters mid-shoot without any discernible variation in color or effect. The exceptional purity, color saturation, and repeatability of Schneider filters virtually eliminate the need for lab color timing correction.

Built to withstand the most demanding conditions on set or location, many Schneider filters feature a specially formulated hard anti-reflective (AR) coating. This proprietary coating resists flaking, peeling, and scratching while reducing light loss and flare to less than 1% per surface. This is a significant improvement over untreated glass, which typically has a light loss of 4% per surface.

Schneider's screw-on filters are equipped with virtually jam-proof brass precision mounting rings. Unmounted Schneider laminated filters are safeguarded against delamination and edge-chipping by Schneider's unique Edge Seal, which also minimizes edge reflection and edge flare.

Contrary to the common perception that filters should not be used in front of long length lenses due to the critically short depth of field, Schneider filters, with their superior quality control, high-quality glass, and advanced grinding and polishing techniques, can be used confidently with even the longest lenses without any degradation of the image quality. This 4x4" Gold #3 Hard Edge Graduated Color Professional Glass Filter is a testament to Schneider's commitment to quality, precision, and innovation in photography equipment.