As a former Nikon shooter I have been interested in the rumors around Nikon's upcoming mirrorless camera system. However, the fact that it will use an image sensor smaller than the one used in the m4/3 cameras and only slightly larger than the one used in the Pentax Q is a bad call by Nikon. I just found some image samples from the Pentax Q at quesabesde.com: Google Translate If you click the link to view the full-size image gallery, the ISO 200 studio sample looks like the ISO 1600 studio sample that Quesabesde shot from the NEX-5!!! As much as I want a mirrorless camera with interchangeable lenses, I also want DSLR-quality image sensors. I barely consider my m4/3 cameras good enough in terms of high ISO ... why would I want an even smaller image sensor?