Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Panasonic ZS7 and Casio EX-ZS15 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS7 has external dimensions of 103 x 60 x 33 mm (4.06 x 2.36 x 1.3″) and weighs 218 g (0.48 lb / 7.69 oz) (including batteries). Casio EX-ZS15 has external dimensions of 103 x 59 x 20 mm (4.06 x 2.32 x 0.79″) and weighs 154 g (including batteries).
Below you can see the front-view size comparison of the Panasonic ZS7 and the Casio EX-ZS15.
Here is the back view size comparison of the Panasonic ZS7 and Casio EX-ZS15.
Now lets look at the top view comparison of Panasonic ZS7 and Casio EX-ZS15.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-ZS15 is significantly lighter (64g ) than the Panasonic ZS7 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-ZS7 (Lumix DMC-TZ10) nor Casio Exilim EX-ZS15 provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic ZS7's 3.00" LCD screen is slightly larger than Casio EX-ZS15's screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.