Heliopan 72mm Cross Screen 6x Filter (707271) Heliopan's premier 72mm Cross Filter creates a wonderful, twinkling star effect with 6-points of light streaking outwards from a light source such as a street lamp. Perfect for weddings or romantic scenes, this creates a glittering and glamorous appearance. This effect is a result of precisely etched lines on the optical surface of the clear filter and is most prevalent when photographing smaller light sources, when working with longer focal lengths, and when using larger apertures. Constructed from the highest German Schott Optics, which guarantees incredible optical resolution. Our glass is specially ground and polished to minimize internal reflections, while ensuring that the quality of your images are not degraded by using our optics in front of your lens. It is also specially hardened to resist most impacts. Our standard 8-Layer Multi-Coating minimizes reflections and does not interfere with the resolution of your camera optics. Our precision cut brass ring ensures a secure and sturdy fit, are more resistant to side impacts, and less likely to bind or cross-thread after extended use. We do not source any materials outside of Germany in the assembly and construction of our products. All raw materials are prepared and hand-assembled in our factory and do not leave our facility until they are completely inspected by our quality technicians.