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I can provide an example of the l-pro with a canon 60d. I also have a qhy10 and use it with that to similar effect.
I have used it with both cameras and a 200mm reflector as well as a 120ED refractor, no problems with any.
The l-pro isn't really a duo band filter though, but it is effective for light pollution while retaining decent star color for clusters, galaxies, etc.
I'm going to get the l-extreme next, it seems like the next step up for an OSC camera now I can manage much longer subs.
This comparison is from a while ago. Single subs from the Canon 60D of the same duration, one with the filter and one the week before without. Both are calibrated and debayered.
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