It's a second leveling layer. And you set it to a 5:1:7 ratio because that's the point where the human eye can't distinguish between "dark gray" and black. After you make the 5:1:7 layer you go to your normal leveling layer and turn the black leveling up until the black sections of the page are mostly solid.
This is to prevent over leveling the page and losing art detail. It's fine if there are couple stand out white specs when you do this. Those are likely specs of dust that were on the scanner, and you just manually touch up those places.
Carson Flores
I just tried this, and it looks pretty good! Many thanks for the tip, user!
Connor Cooper
What is the oldest manga that has been scanlated that I can read ? Some Tezuka shit ?
Connor Robinson
It's tips like this that make me glad I regularly go to these threads. Thanks, user.
Charles Roberts
Yeah, if you're working on a 4 koma, or comic strips then yes, it's very easy to preserve art and make the boarder lines straight.
But if you work with thinks like this with artwork around 3 of the edges I think it's more important to preserve art than get straight boarder lines.