This page is an entry in the Key.

Brightness relationships

This is just a term for the relative brightness of various areas of a photograph.

The depiction of those relationships must not mispresent the appearance of the scene pictures, as per Q7.

In TCQ photographs, “not misrepresenting brightness relationships” is not simply a matter of which depicting areas are brighter or darker (almost all non-“negative” images preserve those relationships on some level).

Instead, it’s a matter of how much darker or how much brighter some areas are in relation to others.

The two most common ways that brightness relationships fail to meet Q7 are excessive application of HDR and excessive burning and dodging.

Note also that darker/lighter tonal values may never be reversed in monochrome photographs or the photograph will be disqualified by Q7; see #786.