Sorry this is so long...
Sorry this is so long...
I have never used a Leica product.*
The thing about the XP1 is: it serves the same purpose as the Zeiss Ikon M system I used for about three years. I owned the Biogon 35/2, the C-Sonnar 50/1.5, the CV 28/3.5 and an ancient Nikkor 85/2 lenses. I carried the ZI-M with me daily and used the lenses on several projects. I sold the ZM and all the M lenses a few years ago because I decided Smart Phones would accelerate the demise of film as a practical(for me)daily medium.
I tried a m4/3 system, but never liked the raw files from the smaller sensor. I carried a D200 with small primes for a while, which was too heavy and bulky. I carried it, but I didn't enjoy using it.
Then came the X100. This camera was like my first rangefinder, the Canonet QL17. Suddenly I had a camera that I enjoyed using and could take with me wherever I went. The raw files were better than those from my D300. I used the X100 as I used my ZI-M, i.e. I mostly focused and recomposed. I operated the AF manually ( in both AF-S and MF modes. I find the OVF/EVF turns out to be the best of both worlds. The X100 got the job done. With the 1.21 firmware installed, it felt like I got a new camera.*
I think anybody who knows how to focus a RF body can have the same in-focus percentage with the X100 or XP1. I suggest people can safely ignore at least 80% of the AF complaints at this point in time. Even the fly-by-wire lens barrel focusing is a practical option with both cameras, although the 35/1.4 is much better than the X100. While some are surely more skilled than I, the ZI-M XP1 and X100 produce about the same percentage of in-focus frames for me.
The X-Pro 1 is finally a true replacement for the ZI-M system I reluctantly stopped using. I just ordered the 18/2 lens last weekend. I have no complaints about the XP1 except for the soft plastic lens caps. I switched to use the Nikon HN-3 lens hood and pinch cap with the Fujinon 35/1.4. I ordered a HN-3 clone and a couple of generic pinch caps. The Nikon HN-1 hood will be used with the 18/2. I guess the hoods, pinch caps and diopters cost me about $60.
I plan to carry the XP1 as my daily camera. I assume the XP1 raw files will be at least as good as the X100's once ACR support is released. For some outings I'll carry both lenses. The X100 will see use as well.
I only bought Fuji products because they had the potential to replace the ZI-M and deliver excellent image quality. I would have bought similar products from any other vendor (except one) had they chose to market one. If a better system comes out in a couple of years, I may stop using the Fujies. If alternate systems do not appear (an OVF is important to me) I'll be happy using the Fuji system for some time. I have seen how a 24 X 36 mm sensor makes a difference with my DSLRs. Yet I do not feel the APS-C sensor holds the Fujies back. That is, the lens focal lengths are matched to the sensor. The fast apertures provide useful DOF control. Case closed. For Nikon there really aren't a set of wide primes that cover the DX sensor. Nikon and other DSLR platforms expect their users to be happy with zoom lenses. I do not enjoy using zoom lenses.
Here is the most important thing. I feel the XP1 has liberated me from thinking about how to replace the ZI-M. The search is over and may not need to resume or some time. Now my challenge is to re-direct my efforts at production rather than worrying about consumption. I hope I'll feel the same sort of restlessness about printing, editing projects and displaying photographs.*