Olympus 8000 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Panasonic ZS20 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CMOS sensor .
Below you can see the 8000 and ZS20 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus 8000 and Panasonic ZS20 Cameras
Olympus 8000 and Panasonic ZS20 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 8000 has 18% larger pixel area compared to Panasonic ZS20, 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 8000
or the
Panasonic ZS20 ,
including hyperfocal distance.
