The former ImageJ plug in SE_MTF has been updated with a new plug in version. As with the early plug in, the current version allows for the measurement of the Modulation Transfer Function from an slanted edge; new features are the MTF plot up to two times the Nyquist frequency and the possibility to choose between three frequency units. The name of the new plug in is SE_MTF_2xNyquist. The Figure shows an MTF plot obtained with the ImageJ plug in from an slanted edge image taken with a professional DSLR; the plot is adjusted to line pairs per millimeter (lp/mm) as frequency units. The plug in has been developed at the Laboratori de Qualitat de la Imatge (LQI) located in the Centre de la Imatge i la Tecnologia Multimèdia (CITM) from the Universitat Politècnica de Catalunya (UPC).