Fujifilm X100T has a
16.0MP APS-C (23.6 x 15.8 mm ) sized CMOS X-TRANS II sensor and features EXR Processor II processor. On the other hand, Leica X1 has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor .
Below you can see the X100T and X1 sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm X100T and Leica X1 Cameras
Fujifilm X100T and Leica X1 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Leica X1 has 30% larger pixel area (30.56µm 2 vs 23.33µm 2 ) compared to Fujifilm X100T, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Fujifilm X100T
or the
Leica X1 ,
including hyperfocal distance.