All Duke Libraries maintain high-quality or quick scanners which are free to anyone to use.
Scanning images for publication or presentation is different than scanning for personal use. We recommend the scanning primer of Princeton University Press’ Guidelines for Preparting and Submitting Illustrations.
This document includes:
Set your scanning level high enough: 300 dpi is standard for presentation or publishing scanning. Some publishers ask for 600 dpi.
Rasterized vs Vector - basically images with computer pixelation vs a smooth grain. Vector images are created using mathematic equations of points, lines, and shapes, resulting in art that is clean, camera ready, and scalable without quality loss. Personal cameras are not rasterized and therefore give a cleaner image than scans.
Depending upon your use, modify or clean your image with a professional tool such as Adobe Photoshop.