Les couleurs en photographie et en particulier l'héliochromie au charbon : traité contenant, dans leur état le plus récent, les formules et la mise en pratique du système de photographie des couleurs publié par l'auteur au mois de mars 1869

The Met provides unparalleled resources for research and welcomes an international community of students and scholars. The Met's Open Access API is where creators and researchers can connect to the The Met collection. Open Access data and public domain images are available for unrestricted commercial and noncommercial use without permission or fee.

To request images under copyright and other restrictions, please use this Image Request form.

We continue to research and examine historical and cultural context for objects in The Met collection. If you have comments or questions about this object record, please contact us using the form below. The Museum looks forward to receiving your comments.

The Metropolitan Museum of Art presents over 5,000 years of art from around the world, and our online collection reflects ongoing work conducted over the course of our more than 150-year history. You may encounter objects or images that may be inappropriate for some viewers or information that may be outdated.