So, I've been hearing about a thing called ISO invariance. It seems to mean that you can massively under expose (up to 5 stops!) a digital photo and then fix it in post. It just so happens my Fuji XT1 is one of the cameras that is supposed to be able to do this. I watched a video... ...and then gave it a try. I took a shot 3 stops under exposed... ISO invariance before by Ade posted Oct 11, 2016 at 10:03 PM ...and then fixed it in post... ISO invariance after by Ade posted Oct 11, 2016 at 10:03 PM I know it is difficult to tell the quality in these small images but I was really impressed how I was able to recover the detail. In Lightroom the left of the shot was almost entirely black, I certainly could see no wall or photo frame, just some noise in the darkness. Amazeballs!