I think the reason the 'Nikon owner I mentioned made the shift to Fuji because the Nikon FF body and lenses are heavy and large...albeit real good. I think lugging around big, heavy camera equipment was the decision maker for him. He wants lighter weight, less bulk to carry around. He's my age, which means an older fellow and when you get to be a senior...lighter and less bulk...when it comes to carrying something..is generally better.
I'm still ok with my K1, plus extra battery and extra grip. but I can see the day coming when I will want something smaller and less weight. My first step will be to take off my grip/ extra battery which will subtract some significant weight/bulk from the K1...but I'm not there yet.
As another poster said maybe Fuji marketing. I think Fuji marketing although nowhere near as extensive as Canon...has been good...promoting the camera as a smaller, lighter, high quality bit of kit. I know a guy who has FF Canon (5D..) and he bought a Fuji X something back earlier. Some feel that Fuji looks a bit like a Leica..I'm one and that appeals to them...and to boot...the Fuji has auto focus and with the Leica rangefinder...you manually focus, the same way I do with my 1951 Leica RF. I think 'looks' and AF are important factors.
Why do I care about Fuji/ mirrorless inroads into the market ? I don't really care, as long as this flow of mirrorless doesn't affect Pentax DSLR/ equipment sales too much. I'm happy with my DSLR K series digitals and have no plans to dump it for anything 'new and improved'...as the laundry soap adverts used to say back in the '60's.
I wonder if many Fuji mirrorless have come back to the Pentax fold after buying, trying and maybe not liking their new camera equipment as much as they thought they would ?
---------- Post added 10-05-18 at 04:28 PM ----------
Originally posted by BarryE Tend to agree. Can't help wondering why so much time is wasted looking over the fence at other manufacturer's equipment and thinking 'what if ...' There is something alternative about Fuji's range, maybe it's because of this that *if* (and I will not be) I decided to look elsewhere, they would likely be where I'd first look. Maybe it's their alternative/niche that has slightly registered with me, a bit like choosing Pentax is being a little odd. But as I said, changing systems from Pentax is not really likely to be on the cards for me - too much invested & perfectly happy with what I have.
Typically, it's me or the conditions that prevent me from adding a decent shot to my 'portfolio' rather my Pentax gear. Ref Norm's bells and whistles, I'd guess I use perhaps 5-10% of my K1s function - albeit those few percentages get used extensively. So my Pentaxes already have 90% bells and whistles I never use, I can't imagine what else I'd ever need - maybe quality tethering would be my number one.
I've paid little attention to what the likes of Canon and Nikon have done over the recent years, so much so that when I occasionally run a workshop, I am surprised how very similar the functionality of client's cameras actually are. Mostly all gear, of comparable cost, is likely to perform much the same for *stills* as technology in this area has mostly maxed out - it's the fleshy bits holding onto it that ruins most potential masterpieces.
I think there is the grass is always greener factor in play, with some enthusiasts. At a local camera club I used to go to there were some who would switch gear on a regular basis. They would have Canon equipment one year, then Nikon would come out with similar level new camera but with some improvements...than for them it would be trade in time, for the new Nikon...and of course vice versa. Those who would do this were in a different cash flow than I was.
Although even if money was no issue, I doubt if I would join them in their yearly switcheroo.
I like to thoroughly learn, take time, experiment with whatever photo equipment I have and that is not a fast process....for me anyways.
BTW, I stopped attending the camera club, too much meeting, not enough photography and also I got tired of explaining why I have Pentax cameras. Apparently... 'Because'.... wasn't enough of an answer for them, after awhile.