Panasonic S1R has a
47.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Venus Engine processor. On the other hand, Pentax K-1 has a
36.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor .
Panasonic S1R's sensor provides 11MP more than Pentax K-1'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 Pentax K-1 and Panasonic S1R 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 S1R and K-1 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic S1R and Pentax K-1 Cameras
Panasonic S1R and Pentax K-1 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.
DxOMark Sensor Scores
Both Panasonic S1R and Pentax K-1 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, S1R has scored 100, 4 points higher than K-1.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Panasonic S1R
100
26.4 bits
14.1 Evs
3525 ISO
Pentax K-1
96
25.4 bits
14.6 Evs
3280 ISO
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
Panasonic S1R
or the
Pentax K-1 ,
including hyperfocal distance.
