Olympus E-PL7 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features TruePic VII processor. On the other hand, Olympus E-P3 has a
12.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features TruePic VI processor.
Below you can see the E-PL7 and E-P3 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus E-PL7 and Olympus E-P3 Cameras
Olympus E-PL7 and Olympus E-P3 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 Olympus E-P3 has 30% larger pixel area (18.45µm 2 vs 14.12µm 2 ) compared to Olympus E-PL7, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Olympus E-PL7 and Olympus E-P3 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, E-PL7 has scored 72, 21 points higher than E-P3.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Olympus E-PL7
72
22.7 bits
12.4 Evs
873 ISO
Olympus E-P3
51
20.8 bits
10.1 Evs
536 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
Olympus E-PL7
or the
Olympus E-P3 ,
including hyperfocal distance.