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 FX48 and Sony TX1 side-by-side from the front, back and top in their relative dimensions. Panasonic FX48 has external dimensions of 95 x 53 x 22 mm (3.74 x 2.09 x 0.87″) and weighs 150 g (0.33 lb / 5.29 oz) (including batteries). Sony TX1 has external dimensions of 94 x 58 x 17 mm (3.7 x 2.28 x 0.67″) and weighs 142 g (0.31 lb / 5.01 oz) (including batteries).
Below you can see the front view size comparison of Panasonic FX48 and Sony TX1. Sony TX1 is 1mm narrower and 5mm thinner than Panasonic FX48 but it is also 5mm taller.
Here is the back view size comparison of Panasonic FX48 and Sony TX1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony TX1 is 8g lighter than the Panasonic FX48 but we don't think this will make a significant difference.
Unfortunately neither Panasonic Lumix DMC-FX48 (Lumix DMC-FX40) nor Sony Cyber-shot DSC-TX1 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
Sony TX1's 3" LCD screen is slightly larger than Panasonic FX48's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.