Olympus E-PL9 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features TruePic VIII processor. On the other hand, Panasonic GF1 has a
12.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine HD processor.
Below you can see the E-PL9 and GF1 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus E-PL9 and Panasonic GF1 Cameras
Olympus E-PL9 and Panasonic GF1 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 Panasonic GF1 has 32% larger pixel area (18.74µm 2 vs 14.12µm 2 ) compared to Olympus E-PL9, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
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-PL9
or the
Panasonic GF1 ,
including hyperfocal distance.
