Monochrome Prints
1. All black and white monochrome images are included.
2. A black and white image which has been modified by the addition of a single tone to the entire image is defined as a Monochrome Print.

Colour Prints
1. All images other than those as defined in Monochrome are defined as colour images.
2. A black and white image which has been modified by the addition of Partial toning or by the addition of one colour to any part of the image is a colour print.

Natural History Photographs
Depict observations from any branch of natural history except Anthropology (study of Humanity!) and Archaeology. Human elements should not be present unless they enhance the nature story and are unobtrusive. Photographs of artificially produced hybrid plants or animals, mounted specimens, obviously set arrangements, derivations, or any form of photographic manipulation that alters the truth of the photographic statement are ineligible, with the exception of detailed micro or macro photographs and scientific banding on wild animals .

Portraiture
a) An image in which the intent is to display the likeness, personality, mood and emotions of the subject or group of subjects.
b) An image in which the intent is to display an emphasis on lifestyle, clothing and accessories of the subject or group of subjects.
c) An image in which the intent is to display the subject or subjects with an emphasis on beauty and sensuality.

These definitions overlap and are open to artistic interpretations.
Every effort should be made to use the highest level of artistic skill.
Environmental portraits as well as studio portraits are acceptable.