Sony W220 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, Sony W710 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the W220 and W710 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony W220 and Sony W710 Cameras
Sony W220 and Sony W710 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 Sony W220 has 32% larger pixel area compared to Sony W710, 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
Sony W220
or the
Sony W710 ,
including hyperfocal distance.
