The Passport photo print measures 35mm x 45mm, or about 1.4 inches wide by 1.8 inches tall, giving it a compact surface area of just 15.75 square inches. The proportions equate to an aspect ratio of approximately 7:10. Being so small, Passport size is dwarfed by conventional print sizes. Its origins trace back to ISO regulation as the standard global dimensions for passport identification photos. The tiny format is specifically intended for reproducing ID portraits accurately on official travel documents. Today, Passport size remains exclusively used for passport photos across the world. Photographers must carefully follow strict framing and background guidelines when capturing these ID portraits. The tiny prints require precise cropping during editing to meet passport agency regulations. While very small, the Passport format serves an important purpose in creating internationally recognized identity documents crucial for travel. For photographers, mastery of framing ID photos in these constrained dimensions is an important specialty skill.