Aha! Figured out how you did it.
I started here:
https://forum.dxo.com/t/black-and-white-conversion-color-filters/11596
…which sent me to “DxO FILMPACK”, and found the section for filters, with your orange filter listed.
Now that I understand HOW you did it, I will try it on my own, maybe with a red filter for a black sky. … done! Works just like if I was shooting film! Thank you again.
PhotoLab is starting to be more and more enjoyable. Scary enjoyable.
A little knowledge is a dangerous thing.
Sadly, all of this would be useless if I ever buy a Monochrom camera - if I do that, I’m back to using real filters again, which fortunately I kept from a lifetime ago.
Sorry for the diversion - between so many of you in this forum presenting unknown features, and me being excited about trying them, this is wonderful!
Oh, and don’t pay any attention to the above image - I just wanted to test the red filter idea. Photo is no better than it was before, but it had a blue sky.