As scanning technology advances, museums are spending more time and money to create extremely high quality scans of every centimeter of a painting, so you can zoom into every detail without losing quality. The Lesley Library pays for a database of these images, called Artstor, linked below. Some scans are so advanced they are hosted on the museum website instead of Artstor, so try searching online for high quality scan of *name of work* to see if you can find an even better scan. Check out some examples of museums using the latest technology below.
Porter Campus
1801 Massachusetts Avenue
Cambridge, MA 02140
617-349-8070
South Campus
89 Brattle Street
Cambridge, MA 02138
617-349-8850