6 - UV/IR Hot-Mirror Filters - On-Lens.
This is the best available on-lens filter for use with a Full Spectrum or Astro converted camera for normal visible light photography. This filter will produce great normal daytime results just like a camera that has never been modified/converted.
Available sizes including 37mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm and 82mm. Step-up rings are also available for use on virtually any size lens. These step-up rings will allow the use of a larger filter on a smaller lens ring, enabling use of the same filter on multiple lenses.