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 ZS25 and Olympus SZ-15 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS25 has external dimensions of 105 x 59 x 28 mm (4.13 x 2.32 x 1.1″) and weighs 193 g (0.43 lb / 6.81 oz) (including batteries). Olympus SZ-15 has external dimensions of and weighs 250 g (0.55 lb / 8.82 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic ZS25 and the Olympus SZ-15. Panasonic ZS25 is clearly the smaller of the two cameras. Its body is 3mm narrower, 11mm shorter and 12mm thinner than Olympus SZ-15.
Comparison image of the Panasonic ZS25 and the Olympus SZ-15 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Panasonic ZS25 and Olympus SZ-15.
Comparison image of the Panasonic ZS25 and the Olympus SZ-15 Size and Weight - Back View
Now lets look at the top view comparison of Panasonic ZS25 and Olympus SZ-15.
Top View Comparison image of the Panasonic ZS25 and the Olympus SZ-15 Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS25 is significantly lighter (57g ) than the Olympus SZ-15 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-ZS25 (Lumix DMC-TZ35) nor Olympus SZ-15 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 ZS25 and Olympus SZ-15's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.