Originally posted by paulcote and I found out the batteries for my Q also work in the fuji xf1 and x10! so I have a host of chargers and batteries now.
Same here. I have the Q7, and a Fuji XF1, and a Fuji REAL 3D W3. I haven't warmed up to the XF1 all that much, as the controls seem awkward and it's more prone to sometimes blow the highlights than my Q7 -- it doesn't seem to have anything quite like Pentax's auto highlight correction, which I almost always keep engaged on the Q7. However, the XF1 does fit neatly in my pocket, which the Q7 does not.
The W3 is amazing, though. If you own a 3D TV or ever had any interest in stereo photography, it's worth tracking down one of these cameras. The sensors (right and left!) are tiny, and 2D performance is not great, but when you view the images in stereo, then you get magic. I soon learned there are entire categories of subject matter where 3D is transformative. For example, I can shoot landscapes that look like a jumble of vegetation with a conventional camera, and they spring to life in 3D. It gives "depth of field" a whole new meaning. On the other hand. . . The post-processing toolchain is so primitive, it's like going back to the age of bear skins and flint knives. It's only the inconvenience of processing and displaying the images that holds me back from shooting more 3D, rather than any shortcoming of image quality or visual impact.
Back to the subject of battery life. For somebody who used to change a roll of film after every 36 shots, carrying a couple of extra batteries is not a cause for much angst. It's just something you have to think about ahead of time.