1.67-mm filter set designed for the 13 Ultra Phone Case. Includes ND filter, CPL filter, Soft Star filter, and close-up filters for versatile shooting options. Easy to install and remove, enabling quick filter changes on the go. Benefits at a glance: - ND filter provides exposure control for longer shutter speeds and motion effects. - CPL filter reduces glare and enhances color and contrast in bright scenes. - Soft Star filter creates starbursts around bright light sources for creative illumination. - Close-up filters enable nearer focusing for macro-style details. Compatibility and size: - Compatible with the 13 Ultra Phone Case. - 1.67-mm filter size enables a compact, concise filter set for mobile photography. Use scenarios: - Outdoor landscapes and water scenes: apply the ND filter to achieve longer exposures, producing silky water and smooth cloud movement. - Daytime photography and cityscapes: use the CPL to cut glare from reflective surfaces and boost color saturation in skies and foliage. - Close-up and night photography: use the close-up filters for near-focus shots, or the Soft Star filter to create star effects around bright lights.