Analyzing noise is the main part of building a noise profile of a device working in a certain mode. Neat Image offers two ways of conducting the noise analysis (profiling): automatic and manual one. Using automatic profiling is easier and therefore recommended for beginners. In difficult cases (for example if there is no large uniform featureless area in analyzed image), automatic profiling may not work or produce less than perfect results. You can always override automatics and use manual profiling.
Case of using automatic profiling
Case of using manual profiling