FANTASTIC! My hot mirror filter was shipped incredibly fast, but even more than that was the quality of the filter! WOW! I have a full-spectrum Nikon DSLR and the Kolari Hot Mirror is unbelievable in restoring the visual range to my camera. Amazing. I am really happy with my purchase. We did a lot of research on hot mirrors before buying and the detailed information on this site was very, very helpful. Matching our lenses to the hot mirror, we got exactly what we needed. Thank you so much! Excellent product and excellent service.