I had the opportunity to try out the X1D over a couple of days. My interest in this camera is for landscape and fine art imagery, suitable for gallery sales and sized up to 6ft to 8ft. I would be using the camera on a tripod most of the time, as I have done in the past with 8x10", 4x5" and various medium format cameras.
I found the color and image quality to be really superb from location work to doing a test in the studio of an oil ( mostly white ) painting detail under studio flash. I didn't have time to get familiar with all the functions but quickly became comfortable and confident using manual focus with the self timer on a tripod and really liked the touch screen functionality. I was less confident using the auto focus hand-held and kept feeling I had moved the camera during the exposure, but the results proved to be mostly excellent in terms of sharpness with the limited experience I had. I'm sure this experience and confidence will improve with use. A few times I had to double tap the exposure button to fire the camera and not sure why this occurred. I also received a 'no card' error message with the card in the camera but just removed and replaced the battery and everything went back to normal. There seems to be heat build up when shooting a lot of images over a short period, although not excessive.
I'm looking to have one main camera system that is light, portable and offers excellent quality for my purposes ( which would include studio work ) and Im really hoping and do feel confident, that with firmware updates and with more personal handling experience, that it will be easy to conclude that this will be the camera system for me. I did offer a suggestion that the camera leveling system could include a degree readout for critical work and also feel that the inclusion of a tilt-shift lens would be essential for landscape work, rather than adding existing components to an adapter.
I should point out that I have used both Phase One and Leaf digital backs for a number of years on medium and large format cameras and experienced many 'buggy' issues with them, opposed to just a couple on my first experience with the X1D. Now to get some large scale test prints done to really check the quality.