I have used the lens in different situations under extremely low light conditions and must say that I am surprised: on the one hand because of the lightning-fast autofocus even in diffused mixed light of the Vatican Museum, on the other hand because of the outstanding imaging properties, for example, at a stage event with extreme light and shade conditions. The original atmosphere has been doing very well reproduced, the sharpness of the photos was outstanding, even the faces could be seen very well on the minimal post-processed RAW images. Taken photos with a GH2. Admittedly, I've never owned a lens that has such imaging properties. The LEICA 1.4 / 25 is a lens that I do not want to miss when traveling under extreme lighting conditions.