Stage 05 · The Book
Paper stock
Weight, surface and show-through as part of the edit.
Entry 3 of 4 in The Book, the fifth of seven stages between the shutter and the shelf.

The page is part of the picture
The paper a photobook is printed on is not a neutral carrier. Weight, surface and opacity each carry meaning — not metaphorically, but physically. They change how ink sits, how black reads, how a spread feels in the hand, and whether a double-page image survives the gutter at all.
Weight is measured in grams per square metre (gsm). A standard office sheet runs around 80 gsm; most photobook text pages land between 130 and 170 gsm; heavy art papers go well above 200 gsm. A heavier stock slows the read — pages turn with more intention, the book holds itself differently — and it resists show-through, the ghosting of an image from the leaf behind. That ghosting matters when you have a dark frame facing a light one. If the layout pairs them on opposite sides of the same leaf, a thin stock will bleed the shadow into the pale page's reading.
Surface determines how ink and coating behave. A gloss or satin surface reflects light and pushes contrast up; blacks read dense and shadows separate. A matte or uncoated sheet absorbs more, softens edge contrast, and shifts the blacks toward something closer to grey — beautiful for certain tonal registers, a liability if the work depends on depth. Neither is correct. They suit different bodies of work, and the choice is an editorial one as much as a production one.

Show-through — sometimes called strike-through — is the third variable. It is a function of weight and opacity together, and it sets a hard limit on what you can put on the back of a page. Heavy shadow areas print through a stock that looks opaque in isolation. Testing a dummy on actual stock, not a screen simulation, is the only reliable check.
These decisions ripple back into the edit. A paper that lifts midtones will read a moody sequence as flat. A paper that crushes shadows will lose detail a quieter surface would hold. If the printing specification changes after the edit is locked, some sequences may need revisiting — what worked as a rhythm in one stock may stall in another.
The page is not chosen after the pictures are sorted. It is part of the same problem.
