As a former IT worker and all-around nerd, I was used to firmware updates having small changes to increase compatibility with new hardware and software; often allowing older BIOSes to support newer hardware, etc. Fujifilm's engineers have turned this concept on its head with their firmware updates, which have routinely introduced new features to existing cameras, and giving users the best that Fujifilm have been able to pull from their existing hardware. These changes have brought huge improvements to already great cameras. Fujifilm's new X-T1 Firmware 4.0 may just be the mother of all updates seen on an X-series camera yet.
After using the new firmware for just under 24 hours, on a job yesterday, and in the streets on the way out, I would like to share my thoughts on the changes so far.