Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic ZS3 and Olympus VR-330 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS3 has external dimensions of 103 x 60 x 33 mm (4.06 x 2.36 x 1.3″) and weighs 229 g (0.50 lb / 8.08 oz) (including batteries). Olympus VR-330 has external dimensions of 101 x 58 x 29 mm (3.98 x 2.28 x 1.14″) and weighs 158 g (0.35 lb / 5.57 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS3 and Olympus VR-330. Olympus VR-330 is clearly the smaller of the two cameras. Its body is 2mm narrower, 2mm shorter and 4mm thinner than Panasonic ZS3.
Here is the back view size comparison of Panasonic ZS3 and Olympus VR-330.
Now lets look at the top view comparison of Panasonic ZS3 and Olympus VR-330.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus VR-330 is significantly lighter (71g ) than the Panasonic ZS3 which may become a big advantage especially on long walking trips.
Unfortunately neither Panasonic Lumix DMC-ZS3 (Lumix DMC-TZ7) nor Olympus VR-330 provides any type of weather sealing in their body, 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 ZS3 and Olympus VR-330's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.