Fig. 3From: A study of the relationship between the migration of image silver and perceived yellowing of silver gelatine photographsThe ΔL* Δa* Δb* values for the well processed (WP) and insufficiently washed (IW) fibre based matt test photographs. Top left: well processed aged at 50 °C and 70% RH, top right: well processed aged at 50 °C and 90% RH, bottom left: insufficiently washed aged at 50 °C and 70% RH, bottom right: insufficiently washed aged at 50 °C and 90% RHBack to article page