Pentax RZ18 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Sony TX66 has a
18.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features BIONZ processor.
Below you can see the RZ18 and TX66 sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax RZ18 and Sony TX66 Cameras
Pentax RZ18 and Sony TX66 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the 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
Pentax RZ18
or the
Sony TX66 ,
including hyperfocal distance.
