While the XT-1 is light and allows a trekking or mountain use without disproportionately burdening. The electronic viewfinder is excellent and the silent trigger, no mirror forces. Fujinon lenses are of outstanding quality, even the 18-55 mm kit. The Fujinon XF-14 mm / Black F2.8R present a dive and a fantastic homogeneity. The color rendition is superb. Green is beautiful! However, autofocus, what some reviews say, is not more reactive but probably am I influenced by comparison with my Nikon D7100. However, the low relief clover is a tedious detail not to mention the lack of firmness of the wheels. Often one is surprised by unintentional changes to settings in the handling of the device due to insufficient free of notches. It's horrifying. Even the aperture ring is a little too "oiled". Some photographers, met here and there, I have also expressed the same observation. Furthermore, the battery has poor capacity, which led me to buy two other so as not to be stranded during my wanderings ... However, we can gain some autonomy by reducing consumption of the LCD screen. These reserves when issued, it should be noted the picture quality and especially the superb JPEG that can be immediately usable. As for the photos taken in the format "raw" (RAF), they are easily and well treated by Aperture that recognizes them without any problem. Some journals, post-processing files with Lightroom 5 RAF would be a little less good, but I do not have myself made the comparison. Besides, Aperture, although it is now abandoned by Apple, remains an excellent software to develop RAW files, as well as those of Nikon Fuji. In short, for me, the two strengths of the XT-1 are weight and made shots, optical quality is a definite asset. It is therefore ideal for travel, reports & trekking especially since the case is tropicalized. It is a pleasure to have in hand and taking a stroll unencumbered, with only two objectives: the Fujinon 14mm and 18-55. However, if one abstraction weight, I prefer to use my Nikon D7100, more responsive and, above all, my D750. But, regarding this one, we're in the big leagues: 24 mpp and full frame, not including the price as heavy as optical.