Panasonic SZ7 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CMOS sensor . On the other hand, Panasonic FP1 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor and features Venus Engine IV processor.
Below you can see the SZ7 and FP1 sensor size comparison.
Panasonic SZ7 and Panasonic FP1 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 Panasonic FP1 has 16% larger pixel area (2.31µm2 vs 1.98µm2) compared to Panasonic SZ7, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.