Fujifilm X100 has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor and features EXR processor. On the other hand, Ricoh GR IV has a
26.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor .
Ricoh GR IV's sensor provides 14MP more than Fujifilm X100's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Another similarity between these two cameras is that both Ricoh GR IV and Fujifilm X100 sensors lack anti-alias (Low-Pass) filters. 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 GR IV sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm X100 and Ricoh GR IV Cameras
Fujifilm X100 and Ricoh GR IV have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
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 X100
or the
Ricoh GR IV ,
including hyperfocal distance.
