Olympus SZ-10 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, Olympus TG-850 iHS has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features TruePic VII processor.
Below you can see the SZ-10 and TG-850 iHS sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus SZ-10 and Olympus TG-850 iHS Cameras
Olympus SZ-10 and Olympus TG-850 iHS 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.
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 SZ-10
or the
Olympus TG-850 iHS ,
including hyperfocal distance.