Panasonic ZS7 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor and features Venus Engine HD II processor. On the other hand, Samsung WB700 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor .
Below you can see the ZS7 and WB700 sensor size comparison.
Panasonic ZS7 and Samsung WB700 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.