Fujifilm

Fujifilm has two systems. The X mount is always APS-C: bodies such as the X-T50 and X-S20, with XF lenses as the premium line and XC as the lighter kit line. Examples include the XF 23mm F1.4, the XF 80mm F2.8 Macro and the XF 100-400mm.

The G mount is GFX medium format, with a larger sensor than full frame, and its own GF lenses.

There are also fixed-lens cameras: the X100VI with an APS-C sensor, and the GFX100RF with a medium format sensor.