A zero-loss image is made using only electrons that are present in the ZLP; that is, they have not undergone any inelastic scattering. When you exclude the inelastically scattered electrons, you can improve both the contrast and resolution of an image.
Access to this capability depends on the mode you use.
SingleMap mode – Press the Select ZLP button to open the Configure Zero-Loss Image dialog
MultiMap mode – Specify in the MultiMap Configuration dialog
Indicate parameters within the Acquire Zero-Loss Image dialog.
Window Settings – Specify the energy loss (0 eV) and slit width for the filter (ideally it should be wide enough to just cover the ZLP)
Detector – Specify the detector settings you want to use
Click Capture.