worthy hollow
I have heard many great things about the l-extreme, but is it really worth buying when I already have an l-enhance? The l-extreme seems to only have slightly tighter band passes than the l-enhance. The l-extreme is also $310 while the l-enhance is $230.
rare tartan
Has bad halos on brighter stars, more so than similar filters. Watch NebulaPhotos' video breakdown of duoband filters. Its an excellent test of these filters.
elder bronze
It’s like much better but the halos are a ton worse
Maybe save for all t or l ultimate used
rare tartan
Altair astro just released their 4nm duoband