The X-T1 body really feels good in my hand. As with the rest of the Fuji products I've used, everything pretty much falls under my fingers just the way an old fuddy-duddy like me expects it to. All of the controls operate with solid but smooth clicks or positive button presses. I didn't notice any of the issues others have mentioned with the weather-sealed buttons being hard to press or feeling spongy. The X-T1's electronic viewfinder is astounding. In fact, I'd rate it to be every bit as good as the EVF on the Sony A7-II-series cameras, which many consider to be the best EVFs on the market. With that said, because of my glasses, I still can't see all of the corners of the frame all of the time. The only camera I've tried in the past few years that has a viewfinder I can see all of is the Olympus OM-D E-M5.
I played around a bit with the X-T1 and my XF 18-55mm lens, and it's a fantastic walk-around combination. About the only thing that might be better for a walkabout might be the XF 18-135mm lens, except for 1-stop disadvantage that lens has over the 18-55. Of course, the "darling" combo lens for the X-T1 might be the XF 16-50mm f/2.8. Anyway, X-T1 and 18-55 make a nice, light, easy-handling combo. Of course, so would the X-T10 and the 18-55, for good bit less money.
Image quality from the X-T1 is identical to my X-E2, since the sensor and processor are exactly the same. And, in fact, the images are so good that although I shot raw and JPEG images, I didn't use any of the raw files when editing the pictures from the event.
So, what didn't I like? Typical of all "hump in the middle" DSLR-style bodies, the LCD (which, BTW, is excellent) falls right under my big, greasy, nose, and that means it gets smeary and slimy after shooting for a while. Once I get going and know I'm in the ballpark on a shoot, I don't chimp a lot, but when I do, I don't want to have to clean the LCD to see clearly. With my "rangefinder-style" X-E1 and X-E2 bodies, my nose never touches the back of the camera, so that's never a worry.
For the X-T1, Fuji have moved the SD card slot to the side of the body, and out of the battery compartment. While I like that they moved it, I don't like the cover. It's an odd "slide-and-fold" arrangement, and I'm not sure how sturdy it is. It feels like it might break easily.
I also don't like that there's no "pop-up" flash. Believe it or not, I use the micro-flashes on the X-E1 and X-E2. They don't provide any serious illumination, but they are sufficient to fill in eye-socket shadows and put a catchlight in the eyes if needed. The X-T1 ships with a little flash that slides into the hot shoe. It works just fine, but it's not as convenient as pushing the little flash button on the back when you need that little pop of fill-flash.
Fujifilm XF 50-140mm f/2.8 R LM OIS WR
Moving on to the lens, which is officially called the XF 50-140mm f/2.8 R LM OIS WR. That's a serious bit of alphabet soup, but then, this a serious lens, people. It's Fuji's answer to using an image-stabilized, weather-sealed, pro-grade 70-200mm f/2.8 lens on a full-frame body. It means business, and it feels like it. It also weighs like it. While, as I mentioned earlier, it's significantly lighter than a comparable lens for a Canon on Nikon, it's still heavy when compared to other Fuji lenses. I think the only heavier Fuji lens is the 100-400mm, which is their lens for serious wildlife photogs (it's apparently also an excellent lens for motorsports).
To say that the 50-140 is a sharp lens is an understatement. It's razor sharp, and focus is generally quite zippy on both the X-T1 and the X-E2. I didn't try it on the X-E1, though I suspect it would fare reasonably well on that camera as well. With that said, it did, on occasion, get lost. In a few cases, it would hunt before locking in, and in a couple of instances, I simply couldn't attain focus automatically. This is where lenses with focusing motors driven by the focus ring can be a both a help and a hindrance. While I could grab the ring and override the auto-focus without having to turn the automation off, the focus ring is not direct drive, and it's electronically "geared" such that it could take a lot of turning to get where I needed it to go. I subsequently missed a couple of shots. With all of that said, I don't think that the problem was any worse than any other system, and in most cases, the Fuji lens/camera combinations performed as well or better than our Canons did with the 70-200mm f/2.8 L IS lenses back when we used them to shoot weddings.
The 50-140 is an image-stabilized lens, and although I didn't perform any scientific tests, I did play a little bit to see how low I could go with the shutter and still get a sharp image. I was impressed, nay amazed, that I could easily hand-hold the 50-140 on the X-T1 down to about 1/30th of a second at 140mm, and when I actually applied myself, I could go down as far as 1/8 second. If you use the standard 1/(focal length * crop factor) formula to determine a safe minimum shutter speed for a lens, that means I should have to shoot at about 1/250. So, being able to shoot easily at 1/30 means I was getting 3-stops with ease, up to about 5 stops of image stabilization.
I started to mention that the 50-140mm is a relatively heavy lens, especially as compared to the body, and on occasion, I felt like the setup was a little nose-heavy, both on the X-T1 and the X-E2. It was never hateful, and it was never at all tiresome. But it sometimes felt just a little off-balance. And, any instability on my part was easily taken care of by the OIS function.
When am I going to buy one?
So, you're all wondering what the bottom line is, aren't you? How soon will it be before I run out and buy an X-T1? Honestly, unless I can find a barely-used one in near-mint condition for $500-600, I feel no particular need to own an X-T1 right now. I still generally prefer the rangefinder-style of the X-E1 and X-E2, and unless they drop that line, that's probably what I'll keep buying. I would, however, definitely rent the X-T1 again if the situation warrants.
The same holds true for the 50-140mm lens. It's not something I regularly need. For the vast majority of what I do, I don't even need the XF 55-200mm lens. The inexpensive XC 50-230mm still works just fine for me most of the time. I could become interested in the XF 100-400, were I to start shooting a lot of wildlife again. But again, for me, rental is my friend unless I find a really crazy good deal.
I should also mention that Donna tried the camera/lens combo for a few minutes and had to put it down. She was particularly impressed with the size and weight of the package, and she already knows about the image quality attainable with the Fuji cameras. She prefers the more DSLR-like styling of the X-T1 over the rangefinderesque X-E or X-Pro models. I think she was fighting urges to leave her Canon behind, at least for a moment (she actually started asking questions like, "how much does this cost?").
So there you have it. My impression of the Fujifilm X-T1 and XF 50-140mm lens. Really nice kit. If I were still shooting weddings, I'd say that Fuji cameras are close enough to ready for prime-time for me to use, with one exception. So, let's talk about that for a moment before I let you go.
Pop goes the flash! Or not.
Last night, I used my trusty, old, Nikon SB-800 flash on the X-T1, and the Fujifilm EF-20 on the X-E2. The SB-800 worked great in combination with the X-T1 and 50-140 lens. Plenty of power, as it always had. And, since it has the ability to work like an old Vivitar 283 "auto" flash, so as long as I was paying attention to what I was doing I could even get good results with automatic flash exposure. Unfortunately, I have to do this because Fuji still has yet to ship a truly professional speedlight. I've held on to the SB-800 for all these years specifically because it's relatively easy to use in almost any situation, with almost any camera.
Fuji have delayed their XF-500 flash (it's now slated for sometime this summer, instead of late this month), which is supposed to finally address the need for a professional flash system for select Fujifilm cameras.