A Note on Print Sizes
For the purpose of clarity for those who are familiar with photographic standards, we use sizes (in inches) of 11 x 14, 16 x 20, 20 x 30, and so on to describe the standard photographic paper sizes on which prints are traditionally made. The actual image size of the print will be somewhat smaller than these industry-standard photo paper sizes for the following reasons:
Proportions: 35mm film has a format ratio of 1:1.5, so a full-frame print on 16 x 20 paper can measure no more than 13.33 x 20. In order to make a print that occupies the entire 16 x 20 sheet, the ends of the frame would be significantly cropped.
Borders: To assist handling and matting, all prints except 12 x 18 Fujix prints include a small border. Thus, the image size of an 11 x 14 is actually 9 x 13.5 and a 16 x 20 LightJet is actually 13 x 19.5. The image area of 20 x 30 and 32 x 48 prints are indeed actual size, because the sheet of paper is actually slightly larger (24 x 32 and 36 x 50 respectively).
Fujix Prints: Because the maximum paper size of prints made using the Fujix process is 12 x 18, a Fujix 16 x 20 is about 15% smaller than a 16 x 20 LightJet. The image area of 11 x 14 Fujix prints, however, are the same size as 11 x 14 LightJets: 9 x 13.5.
Overmatting: To ensure that the mat window does not reveal any of the white border around the print, the windows are cut very slightly smaller than the image area, obscuring a minimal area of the image along its edges.