Both Fujifilm X100 and Fujifilm XF1 have 12.0 MP resolution sensors but Fujifilm X100's sensor is APS-C (23.6 x 15.8 mm ) and Fujifilm XF1's sensor is 2/3-inch (8.8 x 6.6 mm ).
Since Fujifilm X100's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Fujifilm XF1.
Another difference between these two cameras is that Fujifilm X100's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the X100 and XF1 sensor size comparison.
As seen above, Fujifilm X100 has a 6.4x Larger sensor area than Fujifilm XF1. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
DxOMark Sensor Scores
Both Fujifilm X100 and Fujifilm XF1 sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, X100 has scored 73, 24 points higher than XF1.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Fujifilm X100 |
73 |
22.9 bits |
12.4 Evs |
1001 ISO |
Fujifilm XF1 |
49 |
20.5 bits |
11.2 Evs |
199 ISO |