Unlike some dictionaries, one can easily sit down and read this from cover to cover, flipping around for definitions as necessary (terms elsewhere defined are printed in small-caps). Synonymous entries are cross-referenced to the primary entry.
Coverage of digital photography is minimal, but given the time it was written (1991) this is understandable. Also missing are terms like Kodachrome or Ektachrome (though mentioned in the entry for "Chromogenic Print"). Other terms I had hoped to see included 'Colorama', 'Land', 'Polaroid' (though this is alluded to in the entry for 'Dye Diffusion Print'), Giclees/Iris Prints, Lightjet Prints, Image Transfer, Emulsion Transfer, SX-70 manipulation, and no doubt many others I'm not thinking of right now.
The typography, layout, and printing of the book is outstanding. Heavy glossy pages do the reproduced images justice. Examples are well chosen and represent a range of photographer's and genres.