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 Fujifilm X-S1 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). Fujifilm X-S1 has external dimensions of 135 x 107 x 149 mm (5.31 x 4.21 x 5.87″) and weighs 920 g (2.03 lb / 32.45 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS3 and Fujifilm X-S1. Panasonic ZS3 is clearly the smaller of the two cameras. Its body is 32mm narrower, 47mm shorter and 116mm thinner than Fujifilm X-S1.
Here is the back view size comparison of Panasonic ZS3 and Fujifilm X-S1.
Now lets look at the top view comparison of Panasonic ZS3 and Fujifilm X-S1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS3 is significantly lighter (691g ) than the Fujifilm X-S1 which may become a big advantage especially on long walking trips.
Unfortunately neither Panasonic Lumix DMC-ZS3 (Lumix DMC-TZ7) nor Fujifilm X-S1 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 Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic ZS3 and Fujifilm X-S1's LCD screens has the same diagonal size of 3".
On the other hand, Fujifilm X-S1 features a Tilting screen
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Panasonic ZS3 has a fixed type screen which provides less flexibility in shooting positions compared to X-S1.