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 Canon SX200 IS 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). Canon SX200 IS has external dimensions of 103 x 61 x 38 mm (4.06 x 2.4 x 1.5″) and weighs 247 g (0.54 lb / 8.71 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS3 and Canon SX200 IS. Panasonic ZS3 has the same height with Canon SX200 IS. On the other hand, with a width of 60mm, it is 1 narrower and also with a thickness of 33mm, it is 5mm thinner than Canon SX200 IS.
Here is the back view size comparison of Panasonic ZS3 and Canon SX200 IS.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS3 is 18g lighter than the Canon SX200 IS but we don't think this will make a significant difference.
Unfortunately neither Panasonic Lumix DMC-ZS3 (Lumix DMC-TZ7) nor Canon PowerShot SX200 IS 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 Canon SX200 IS'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.