A technical book on high-resolution photography published in 1990. The book describes what visual quality is in terms of resolution and sharpness. It then looks at what degrades an image and goes into mechanisms of clarity and anti-degradation.
Written at a time when film emulsions tended to be thicker, some of its conclusions no longer hold. Nevertheless there is much to learn from this book in terms of the principles of acuity.
Image Clarity by John Williams