I currently have Optolong LRGB filters that I'm using with my 16200 based camera. I'm finding that my blue frames need 2 minutes of extra exposure to get close to the same ADU of my R and G frames (if R&G are 1200 then blue might only be 200-300 for the same exposure time). Thinking about buying Chroma, Astronomik, or Astrodon type E filters as replacements. Was curious if some individuals could post what they get for background values for their RGB frames with Chroma and Astronomik Deep Sky in particular.