Olympus E-620 has a
12.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features TruePic III+ processor. On the other hand, Olympus E-510 has a
10.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor .
Below you can see the E-620 and E-510 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus E-620 and Olympus E-510 Cameras
Olympus E-620 and Olympus E-510 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-510 has 22% larger pixel area (22.54µm 2 vs 18.45µm 2 ) compared to Olympus E-620, 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-620 and Olympus E-510 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-620 has scored 55, 3 points higher than E-510.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Olympus E-620
55
21.3 bits
10.3 Evs
536 ISO
Olympus E-510
52
21.2 bits
10.0 Evs
442 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-620
or the
Olympus E-510 ,
including hyperfocal distance.
