Hi Dr. Rosen, At the risk of some shameless self-promotion, this article has a discussion of color balance and a practical method of calibrating: http://www.opsweb.org/Publicat/JourPdf/31-1/31-1-05.pdf Feel free to contact me with any questions. tim Timothy J. Bennett, CRA, FOPS, OCT-C Penn State Department of Ophthalmology Milton S. Hershey Medical Center 500 University Drive, Suite 800 UPC Hershey, PA 17033 Office: 717 531-5516 Cell: 717 381-5595 From: optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of Richard Rosen Sent: Thursday, June 23, 2011 8:44 AM To: optimal@xxxxxxxxxxxxx Subject: [optimal] Calibration of digital color fundus camera Does a Does anyone know of any papers or work done in adjusting a digital fundus camera to obtain standardized color? Richard B. Rosen, M.D., F.A.C.S, F.A.S.R.S., C.R.A. Vice Chair and Director of Ophthalmology Research Surgeon Director and Chief of Retinal Services New York Eye and Ear Infirmary Professor of Ophthalmology New York Medical College Visiting Professor of Applied Optics School of Physical Sciences University of Kent, Canterbury, UK We are trying to adapt a digital color camera to get images from a Topcon fundus camera.