The international definition of 'Nature Photography'
From 1 January 2015 the International Federation of Photographic Art (FIAP), the Photographic Society of America (PSA) and the Royal Photographic Society (RPS) have all used the same definition for Nature and Wildlife photography in the exhibitions that they approve. The definition was updated in 2021 in preparation for the 2022 exhibition seasion. That definition is also be used by many national photopgraphic organisations such as the Australian Photographic Society (APS).
You can read the Nature definition on this page.
Interpreting the 'Nature Photography' definition
The FIAP/PSA Nature photography definition can be a challenge to interpret, so I have prepared a detailed guide that you can follow when capturing and editing images that you plan to enter in Nature or Wildlife categories of competitions (exhibitions). This guide has been adopted as the official PSA Guide for Nature Photographers and Judges.
You can download the Guide here.
It is important to acknowledge that there will be many circumstances in which a judge will not be able to tell whether or not a particular image complies with the Nature or Wildlife definition; for example, it may be impossible to tell whether or not an animal was in captivity when photographed, or whether some small element was cloned in or out. I believe that it is the photographer’s responsibility to be honest and not to deliberately try to deceive the judge or stretch the rules. If there is any doubt about whether or not an image meets the Nature or Wildlife definition it should be entered in an open competition.
Ethics in Nature photography
Basic guidelines for ethic practice in nature photography are given here.