Really interesting view on photography :-) We should start to use new unit, called "gram/apperture" :-)
Well, this thread starts to be a Fuji one, right?
Allow me then some more notes since I am previous K3 and current X-T1 user.
1) Lenses
Fuji does not have such a long history of the Xmount. But 12 lenses in two years is quite impressive. Sure, there are still some FL missing, specifically long teles.
If you look on their roadmap (which is btw realised in time) you see that there are two lines of primes, beside zooms.
bigger lenses, larger apperture: 16/1.4 (2015), 23/1.4, 35/1.4 and 56/1.2
more compact lenses, smaller apperture: 14/2.8, 18/2, 27/2.8, 60/2.4 and 90/2 (2015)
So you have the freedom to choise your quality/compactness/price.
They also have "economic" XC zoom line, but with ED elements, optical stabilisation and WR
I also owned 21/3.2 and liked it. But 23/1.4 is absolutely amazing. It opens me new possibilities how I can express reality on a picture. Well, 1.4 lenses are simply more expensive. That's life. I would pay the same price to Pentax with pleasure, if such lens exists.
2) Sensor
You can study tests or you can make pictures. I prefere the second option. Then you realise, that the sensor is simply good enough up to iso 3200, without need of corrections in RAW developer. I prefer somehow 16Mpx of X-T1 (and K5II) more than 24Mpx of K3, which requires certain shooting discipline. Although results from K3, if well exposed, are excellent.
3) RAW
The fact is, that Lightroom is not the best tool for fuji RAW. But you can use Ninja plugin in LR and it gives very good results. I did not shoot in JPG with K3 at all. Now I still evaluate X-T1 and shoot both JPG and RAW. For the first time in my photo experience are JPGs good enough that I sometimes don't bother with developing RAW.
DR is btw 13.1EV compared to K3's 13.4 EV (according to imaging resource), just for test lovers.
4) Shooting experience
That is actually main reason (beside lenses) why I moved to X-T1. It is very much connected with MILC generally. As I already wrote, I changed completely my style of shooting. You expose with DSLR and check, if the result suits your intention and is well focused. With MILC you see directly the light mood of the picture. And it's sharp, thanks to contrast focusing. I have some friends, who own DA55, nice lens with character. Some of them are really unhappy with focusing issues. The same happens with Sigma 18-35, which is also fast lens. So my guess is, that Pentax AF module has to be more optimalised for fast lenses (AF strip length). MILC bring generally big advantage here.
Anyhow, X-T1 is not perfect. It has only 9 phase detection points, which speed up focusing (OMD EM1 has more and is quicker).
5) Viewfinder
Try it. No other words are needed. It is TV, but very good one :-)
6) FA31, 43 and 77
I still own FA77 and use it on X-T1. Thanks to focus peaking and electronic loupe in viewfinder I am able to focus precisely (well, not children and other quick moving elements...). Fuji has another jewel, XF56. XF35 is also a nice lens.
I am not sure, if X-T1 is just second system for DSLR owner. Investment into good lenses for both MILC and DSLR are already high. Street, portrait and even wedding are areas where X-T1 gives you good service. If I would consider purchase of X-T1 and D750 , I would buy X-T1 again. D750 gives you better quality, AF is probably amazing but X-T1 is (for me) more joy.
I understand that this is Pentax forum, so my X-T1 adoration does not remain without response :-)
Take me as an example of somebody, who likes Pentax, owns Pentax LX and 6x7, but is not resistant to nice products of different producer.
I am 100% sure, that if X-T1 would be a Pentax product, it would be celebrated on this forum intensively.
