!!! :o :
Let me begin by transferring a response to this issue from the
thread in which you kindly removed the off-topic distraction:
+1 +1 +1 !
It’s ironic for you, A_S, to remark about poor image quality when
your images are at times frustrating to discern on account of your
choice of cordage --those darned striped/zig-zag-markered kernmantles [sic]
are a PITA to figure, sometimes. And, in contrast, Xarax’s orange-vs-white
combinations shine in clarity. And your solid blue in the pdf, too, comes
out well.
As for a white background, geeesh, it’s a bit of a peeve w/me, but
I find e.g. white borders on mounted photo prints often to be
overwhelming in their light reflection --one has to look past/within
all that to see the subtle light of the colored image. (And, heck,
nevermind the “high intensity”, just use high ISO and bump your EV
if you want to make the photo brighter --night becomes noon.)
Of course, logging “knots in the wild”, one will not be in a position
to choose the background (or the cordage) --just capture what was
there, out in the wild.