22 Sep
2015
22 Sep
'15
11:11 p.m.
Ben,
In practice, 10nm is plenty "good enough" for graphic arts work, 5nm all you need, 3nm as much overkill as isn't ludicrous, and 1nm near pointless but makes for some impressive-looking charts and the like.
Most reflective instruments return data in traceable 10nm increments. That's fine for wide-band kind of colors like inks on paper. But to nail lighting down, 5nm increment is preferred, at least until the day we're done with spiky fluorescents overhead luminaires at press consoles and everywhere. Where do you get reliable 5nm data for measuring light sources from? To plug into ISO-3664 computations? / Roger