Emulsion and image exposure settings

Last updated on Jun 2, 2026

Find film emulsion directions and image exposure options in Adobe InDesign for commercial printing output.

When preparing film output for commercial printing, verify emulsion direction and image exposure requirements with your print service provider before finalizing separation settings.

What is emulsion

Emulsion is the photosensitive layer on film or paper that captures the printed image. Print service providers typically require negative film in the United States and positive film in Europe and Japan, though requirements vary by press type and workflow.

Identifying emulsion side

You can identify the emulsion side by examining the film under good light—the dull side is emulsion, while the shiny side is the base. These settings are defined as Emulsion Up (EU) or Emulsion Down (ED).

Flip settings

Access flip options in the Output section of the Print dialog box when Color is set to Composite Gray or a separation option.

The flip options in the Output section determine whether the type reads correctly, Right Reading (RR), or appears mirrored or backwards, called Wrong Reading (WR), when viewing the emulsion side.

Flip option

Effect

Readability

None (default)

No orientation changes to imageable area.

Right reading when photosensitive layer faces you.

Horizontal

Mirrors imageable area across vertical axis.

Wrong reading.

Vertical

Mirrors imageable area across horizontal axis.

Upside down.

Horizontal & Vertical

Mirrors across both horizontal and vertical axes.

Right reading when photosensitive layer faces away from you.

Note

Images printed on film typically use Horizontal & Vertical orientation.

Image exposure settings

Image exposure determines whether the output produces negative or positive film.

Access image exposure settings in the Output section of the Print dialog box when Color is set to Composite Gray or a separation option. You can select or deselect Negative based on service provider requirements.

Tip

Emulsion and image exposure settings in the Print dialog box override conflicting printer driver settings. Always specify these settings in the Print dialog box to ensure correct output.