Fujifilm embedded the ISO sensitivity dial inside the shutter-speed dial; to change ISO, you lift and turn.
The X100F has the same lens the first X100 had many years ago. It's a 23mm f2; with the X100F's APS-C sensor, it has the equivalent angle of view to a 35mm on a full-frame.
There's now a "C" mode on the exposure compensation dial that allows you to access a broader range of adjustments -- up to +/-5 EV -- via one of the jog dials.
The lever switches the viewfinder between an EVF and an OVF with an electronic overlay.
The X100 series has long had a manual aperture ring; now it supports 1/3 stop settings. While they're not labeled, they click in as you rotate.
Since Fujifilm did away with the buttons down the left side of the camera back, now you access metering -- which the company refers to as "photometry" -- via the reprogrammable Fn button.
While you can hold it and shoot single-handed, it's not as comfortable as I'd like.
The back is much more streamlined than the previous model, with fewer buttons.
It's a little bigger and higher-resolution.