Schneider 4x4" Storm Blue Solid Color # 1, Professional Glass Filter

Where the power of nature meets the precision of technology, the 4x4" Storm Blue Solid Color #1 Professional Glass Filter stands out. This filter adds a grey-green hue to ocean and sky scenes, creating a dramatic stormy effect that enhances the visual storytelling of photographers and cinematographers.

Crafted from crystal-clear, water-white optical glass, each Schneider filter is diamond cut, then ground and polished to achieve precise flatness and plane-parallelism. This meticulous process ensures an exact parallel relationship between the front and back filter surfaces. The perfection of each filter is verified by a laser interferometer, ensuring the highest level of accuracy.

Consistency is key in the world of professional photography and cinematography. Schneider filters are checked with a densitometer for consistent density and tested with a spectrophotometer for proper light transmission. This ultra-high consistency allows professionals to swap like filters mid-shoot with no discernible variation in color or effect. The unprecedented purity, color saturation, and repeatability of Schneider filters virtually eliminate the need for lab color timing correction.

Designed to withstand the most rigorous demands on set or location, 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 compared to untreated glass, which has a light loss of 4% per surface.

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

Contrary to the common perception that filters should not be used in front of long length lenses, Schneider filters defy this belief. Poorly made glass or plastic-resin filters can degrade the image quality, but Schneider filters, thanks to their superior quality control, high-quality glass, and precise grinding and polishing techniques, can be used confidently in front of even the longest lens.