“ Le regole etiche sono personali e anche organizzazioni internazionali di fotografia hanno notevoli difficoltà a fissare nulla più di linee guida. „
Qui trovi la risposta del world press photo:
www.worldpressphoto.org/content/2014-world-press-photo-contest-set
“ We expect professional photojournalists to respect journalistic, ethical standards and not to tamper with the content of their pictures by adding or removing elements. To establish to what degree pictures have been enhanced in post-processing, we have tightened our protocols and will provide the jury members with expert advice to aid their decision making. The jury will consider the entries for their news value, composition and style and will look for originality as well as impact. In addition, independent experts will have examined all prizewinning work before the jury makes their final decisions. World Press Photo will facilitate this by requesting the unprocessed files from photographers in the later stages of the judging process. The experts will carry out a case-by-case analysis of the level of post-processing in the files that were entered in the contest by comparing them with the unprocessed files. The jury will have the experts? report on file integrity available for making an assessment of what they regard permissible before entering the last judging rounds. If, for any reason, the experts are unable to examine all unprocessed files before the end of the judging period and anomalies in file integrity surface later, the prizewinning work may be disqualified from the contest. „
Per il resto è un argomento che lascia il tempo che trova.
Voilà Mr. Ansel Adams.

(fonte www.occhiodelfotografo.com/fotoritocco-e-postproduzione-delle-foto-que
A sinistra il negativo a destra la sua stampa. ("Moonrise" 1970)