One Piece card centering
Most One Piece cards have a thin printed frame to measure. The alt-arts don't, and collectors check them by the gaps around two printed marks instead.
Cards with a frame
A standard One Piece card has a narrow printed frame, about a millimetre wide on the front. Its centering is read like any bordered card: the left frame against the right, the top against the bottom. Because the frame is so thin, a small shift is a big change in ratio, and a photo has to be sharp to read it.
Alt-arts with no frame
A full-art or alt-art One Piece card has no frame to measure. Collectors check its centering by the gaps between the card's edge and two marks every layout prints in the same place:
- the cost circle at the top left: the gap from the top edge to the circle, and from the left edge to the circle;
- the colour hexagon at the bottom left: the gap from the left edge to the hexagon.
The layout puts those marks at the same inset, so on a centered card the gaps match. When the print has shifted, they don't: a top gap bigger than the left gaps means the print sits low.
How Preslab reads them
Pick One Piece in the game picker. On a front with no frame, Preslab finds the cost circle and the colour hexagon, measures the three gaps, and turns them into a ratio the way a collector reads them, on a border as wide as the design's own inset. The lines it used are drawn on your photo, and you can drag them.
What this cannot see is a shift that is the same in both directions, because the gaps would still match. Your eye can't see it either, which is why collectors use the same rule.
Photographing a One Piece card
- A dark, plain background, with the card out of its sleeve.
- Fill most of the frame: the gaps are a few millimetres, and every pixel counts.
- Even light with no glare on the cost circle.