Paul Martin Lester 
Photojournalism [PDF ebook] 
An Ethical Approach

Originally published in 1991. "A photojournalist is a mixture of a cool, detached professional and a sensitive, involved citizen. The taking of pictures is much more than F-stops and shutter speeds. The printing of pictures is much more than chemical temperatures and contrast grades. The publishing of pictures is much more than cropping and size decisions. A photojournalist must always be aware that the technical aspects of the photographic process are not the primary concerns."This book addresses ethics in photojournalism in depth, with sections on the philosophy in the discipline, on pictures of victims or disaster scenes, on privacy rights and on altering images. As important and interesting today as when it was first in print.