Olympus TG-810 has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features TruePic III+ processor. On the other hand, Sony W570 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features BIONZ processor.
Below you can see the TG-810 and W570 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus TG-810 and Sony W570 Cameras
Olympus TG-810 and Sony W570 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 TG-810 has 15% larger pixel area compared to Sony W570, 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 TG-810
or the
Sony W570 ,
including hyperfocal distance.
