Panasonic TS5 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CMOS sensor . On the other hand, Panasonic FS25 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor .
Below you can see the TS5 and FS25 sensor size comparison.
Panasonic TS5 and Panasonic FS25 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 FS25 has 32% larger pixel area (2.31µm2 vs 1.74µm2) compared to Panasonic TS5, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.