How much does the convenience store enlarge the L-size photo prints
For the purpose of accurate printing of ID photos 18 Sep 2025
When printing borderless prints at Lawson or FamilyMart convenience stores the photo is slightly enlarged so that it can be printed borderless.
A Lç(L size) photo print is of dimensions 127x89mm. Printing at a resolution of 600dpi results in a file 3000x2102 pixels.
Looking at a sample print, I have calculated the enlargement factor as approximately 104%.
Therefore, to produce a corresponding print feature of length A millimeters, the feature in the image file should be
(A * 3000/127 / 1.04) pixels
For example, to produce a 50mmx50mm ID photo, the size in the image should be
50 * 3000/127 / 1.04 â 1137mm
Example: 30mmx40mm: 30mm * 3000px / 127mm / 1.04 = 681 ; 40mm * 3000px / 127mm / 1.04 = 909
Happy printing.