Tinting and toning of Eastman positive motion picture film : Second edition—revised

A concise guide for anyone working with positive motion‑picture film, this manual explains how colour can be added through tinting and toning to create mood and depth on the screen. It walks readers through the chemistry of acid dyes, the importance of choosing agents that won’t attack the gelatin base, and the practical problems that lead to brittleness during projection. The text also compares foreign‑sourced pigments with newly tested American alternatives, offering clear criteria for selecting safe, reliable colours.

The second edition updates earlier formulas, trimming sample tints to a usable dozen and revising the toning chapter with more stable copper and iron tones. A noteworthy addition is a two‑step dye‑toning technique that first treats the image in a copper bath, then layers a basic dye without compromising clarity. Practical, step‑by‑step instructions make the complex chemistry accessible to technicians looking to achieve consistent, vibrant results.