While the LX5, with its updated sensor and image processing, has made some strides in noise suppression over the LX3, the in-camera processing and JPEG compression for low-light shots still leaves something to be desired. Note the yellow splotches on the text at sensitivities as low as ISO 80; interestingly, it looks like the system might be optimized for ISO 200, as that delivers the best results. Processing raw files of the same images, however, allowed for relatively clean and usable images up to ISO 800.