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 ZR3 and Olympus XZ-10 side-by-side from the front, back and top in their relative dimensions. Panasonic ZR3 has external dimensions of 98 x 55 x 26 mm (3.86 x 2.17 x 1.02″) and weighs 159 g (0.35 lb / 5.61 oz) (including batteries). Olympus XZ-10 has external dimensions of 102 x 61 x 34 mm (4.03 x 2.41 x 1.35″) and weighs 221 g (0.49 lb / 7.80 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic ZR3 and the Olympus XZ-10. Panasonic ZR3 is clearly the smaller of the two cameras. Its body is 4mm narrower, 6mm shorter and 8mm thinner than Olympus XZ-10.
Here is the back view size comparison of the Panasonic ZR3 and Olympus XZ-10.
Now lets look at the top view comparison of Panasonic ZR3 and Olympus XZ-10.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic ZR3 is significantly lighter (62g ) than the Olympus XZ-10 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-ZR3 (Lumix DMC-ZX3) nor Olympus Stylus XZ-10 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
Olympus XZ-10's 3.00" LCD screen is slightly larger than Panasonic ZR3's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.