At the Photo Injector Test facility at DESY, Zeuthen site (PITZ), high brightness electron sources for linac based Free Electron Lasers (FELs), like FLASH and the European XFEL are developed and characterized. The electrons are generated via the photo effect using a cesium telluride (Cs2Te) cathode and are accelerated by an 1.6-cell L-band RF-gun cavity with a maximum accelerating gradient at the cathode of about 60 MV/m. The characteristics of the photocathode laser pulses have been optimized using a laser pulse shaping method yielding small emittances. The transverse projected emittance is measured by a single slit scan technique. The measurement program in the last run period at PITZ concentrated on emittance measurements for the nominal 1 nC beam and emittance optimization for lower bunch charges. The recent results show that normalized projected emittances of below 1 mm-mrad for 1 nC charge can be realized at PITZ. The facility set-up and measurement results including their uncertainties will be reported and discussed in this contribution.