Olympus E-PL3 has a
12.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Truepic VI processor. On the other hand, Panasonic GF7 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine processor.
Below you can see the E-PL3 and GF7 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus E-PL3 and Panasonic GF7 Cameras
Olympus E-PL3 and Panasonic GF7 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-PL3 has 29% larger pixel area compared to Panasonic GF7, it has potential to collect more light on pixel level hence 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-PL3
or the
Panasonic GF7 ,
including hyperfocal distance.
