Canon SX270 HS has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Digic 6 processor. On the other hand, 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.
Below you can see the SX270 HS and SZ-10 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon SX270 HS and Olympus SZ-10 Cameras
Canon SX270 HS and Olympus SZ-10 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
Canon SX270 HS
or the
Olympus SZ-10 ,
including hyperfocal distance.