If you haven’t checked out my YouTube channel I invite you to do so. This is my latest video where I talk about how I’ve learned to embrace the high ISO setting of my Fujifilm cameras. 5 years ago I would have never thought I’d shoot at ISO 12,800 so much. Now I love shooting with it because of the look it gives my black and white images.
Check out the video for more about this.
Craig Bergonzoni's Blog 
I think anyone who has already experimented with high ISO has done it more out of necessity than free will.
I think (the problem) is really between our ears.
Honestly I think your “finding” is great, I’m definitely going to try it out on my X-H1’s – but now on purpose.
Thanks Craig!
Thank you Marc!! I definitely realize this much grain and noise isn’t for everyone but I definitely enjoy the look it creates in these Fujifilm cameras.