A new generation - the world-first - galaxy and nebula booster filter intended for shooting not only nebulae, but also galaxies by the use of the transmittance around the near infrared region.
Installation manual for the ZF filter can be downloadable at:
|*This product is an interference filter. Its spectrum characteristics will be subject to the incidence of incoming light.
|When the GNB filter is placed between the lens and the camera: