I know this is an old thread but I got a production model of the RX1 last week and took it on a trip to Mt Whitney this past weekend and I just wanted to share my first impressions. (ill post a full review in a couple weeks when i get all the accessories and better RAW software)
First let me say yes its expensive, very expensive, even outrageously expensive. But in short, for the price, you have no other options as far as end result image quality goes; and if you factor in the revolutionary size and weight, its (in my opinion) a no brainer.
So i packed my bag and headed to sierras to do some real world testing. The first thing notice about the RX1 is the build quality, its amazing. You feel as though you have a true professional tool in your hands as opposed to a toy like feel of many other cameras. the second thing I loved about the RX1 is the battery size, yes the battery size. i know its not on the top of list for many people but for me it is. The batteries were a traditional 'compact' camera size not those huge DSLR or NEX systems batteries. Why is this important, well for us its all about weight right? Right, but for me its also about keeping those batteries warm during an early morning alpine start, and its way easier to keep smaller batteries warm than it is to keep larger ones warm (also i can bring more!!!). And the cherry on top? USB charging. Ya thats right I can charge my full-frame professional quality camera from USB on the side of a mountain. But at the end of the day I have a camera around my neck that can produce professional quality prints at a fraction of the weight and size of a SLR set-up (although i still have my 5d and L-series lenses, the RX1 is not meant to compete with it, its in a whole different category, a different league).
However, there are some drawbacks. There is no integrated viewfinder. You can buy one...for $600. This is a real misstep by Sony. If you design this crazy new full frame $3000 niche camera why not put a EVF on it? If this thing had a EVF on it would be, without a doubt, an instant classic, a milestone even. Other people will point to the fixed lens, which is not really a problem for me. I always shoot with fixed lenses anyway and 35mm is a perfect focal length for me. Then, I guess, the only other real drawback is the price. Which is frankly ridiculous. Another misstep by Sony, if they price this thing just a little lower it opens the whole thing up. And the price of accessories, are you serious Sony? $200 for a lens hood, $500 for an EVF, and $600 for an optical viewfinder that cant show focus adjustments? Unreal. Hopefully by the time the RX2 comes around they will get these prices under control (probably not). But at the end of the day I would and will and have spent the money to get me one of these. The image quality is just that good!!!!
I have summited Everest 3 times and as a physician I go back every year to provide medical care. And the camera I have seen more than any other up there is, not surprisingly, the same camera every western-based guide service recommends...a variant of the Canon G-series. After my time on Whitney with the RX1, I suspect that clients who pay upwards of $60,000 and their guides are going to be favoring a new camera for their summit pictures.
These are some of my first impressions, I will post a full review and sample pics in a couple weeks. Please free to ask questions.
PS I have no financial disclosures to make. I do not work for Sony or any affiliate of theirs.