Seymour Solar makes the finest, yet most-affordable solar filters we’ve ever tested- starting at just $129.95/pair. Their Helios thin-film has a consistent yellow-orange solar image, with higher contrast than competitor’s filters. For binoculars capable of magnifications greater than 25x, we also offer Seymour Premium Glass filters, for highest-possible resolution. The glass filters are recommended when doing photography using a Novagrade Smartphone or Tablet Adapter. For visual observation, the Helios film filters are all you need. For the Long-Range Observation binocular, our filters come with custom felt tape on the outside of the cell, in order to snugly fit the inside of the glare-shield area. If your binocular is equipped with the 7×50 finder-scope, there is an option to add one smaller filter to fit that. All filters meet ISO 123112-2 requirements. No returns accepted for solar filters.