Sony H70 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features BIONZ processor. On the other hand, Sony W230 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the H70 and W230 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony H70 and Sony W230 Cameras
Sony H70 and Sony W230 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 W230 has 32% larger pixel area (2.34µm 2 vs 1.76µm 2 ) compared to Sony H70, 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
Sony H70
or the
Sony W230 ,
including hyperfocal distance.
