The use of long wavelengths for anomalous phasing has long been hampered by strong air absorption and large scattering angles. A PILATUS 12M specific solution, built by DECTRIS in close collaboration with the I23 team of Diamond Light Source (DLS), effectively overcame these limitations. Placing the sample and detector in vacuum eliminates air absorption. The semi-cylindrical shape of the detector covers a 2-theta range of ±100° and allows the simultaneous collection of low- and high-resolution data.