Kodak Z950 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Sony NEX-3 has a
14.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the Z950 and NEX-3 sensor size comparison.
As seen above, Sony NEX-3 has a 13.2x Larger sensor area than Kodak Z950. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.