Leica Lens Saga by Erwin Puts

evolution - optical design - evaluation - future.
Berek´s Legacy: the 50 mm lens for Leica rangefinder cameras

Published October 2016, Hardcover, ENGLISH TEXT, 386 pages, 6-3/4 x 9.5" (17x24cm), Illustrations and graphics throughout the book, many in color, limited edition of 1200.

Contents:

chapter 1 = Introduction
chapter 2 = The opto-mechanical properties of Leica CRF lenses
chapter 3 = Process of Image formation
chapter 4 = Development Leica optics
chapter 5 = Standard lenses for the Leica rangefinder camera:
Anastigmat/Elmax - Evolution of the photographic lens - Low aperture singlets - Meniscus lens - The symmetrical anastigmat - Medium aperture triplets: medium speed lenses - The Elmar design - The Hektor design - High aperture lenses - The early development of the high-speed lens - Summar and Summitar designs - Summicron I and II designs - The Summicron (III) and (IV) designs - The Apo-Summicron-M 50 mm design - Very high speed lenses - Technical optics 
chapter 6 = Methods of optical design -
chapter 7 = The evaluation of lens performance -
chapter 8 = Annex; all about the important Leica lenses like Anastigmats, Elmars, Hektor, Summarit, Summar, Summitar, Summicron, Xenon, Summilux, Noctilux