Ctein (he only has one name) is an expert on dye transfers and matters connected with film generally.
He has been experimenting with and writing about film and digital media for years, and is very well regarded for the straightforward and practical way he gets information across.
You may like to catch up with his guest articles on The Online Photographer. Just search for his name on the site.
Ctein’s book on the digital restoration of old, faded, and damaged photographs is available to read online at Google Books and here is the link: Digital Restoration From Start To Finish: How To Restore Old And Faded Photographs. I looked through the online version and it seems as though it is the full online version of the print edition, including the illustrations.
The book is also available from Amazon in the USA and in the UK.
