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 Samsung TL225 and Panasonic LZ20 side-by-side from the front, back and top in their relative dimensions. Samsung TL225 has external dimensions of 100 x 60 x 19 mm (3.94 x 2.36 x 0.75″) and weighs 187 g (0.41 lb / 6.60 oz) (including batteries). Panasonic LZ20 has external dimensions of 120 x 76 x 80 mm (4.72 x 2.99 x 3.15″) and weighs 499 g (1.10 lb / 17.60 oz) (including batteries).
Below you can see the front view size comparison of Samsung TL225 and Panasonic LZ20. Samsung TL225 is clearly the smaller of the two cameras. Its body is 20mm narrower, 16mm shorter and 61mm thinner than Panasonic LZ20.
Here is the back view size comparison of Samsung TL225 and Panasonic LZ20.
Now lets look at the top view comparison of Samsung TL225 and Panasonic LZ20.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Samsung TL225 is significantly lighter (312g ) than the Panasonic LZ20 which may become a big advantage especially on long walking trips.
Unfortunately neither Samsung TL225 (ST550) nor Panasonic Lumix DMC-LZ20 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
Samsung TL225's 3.5" LCD screen is slightly larger than Panasonic LZ20's 3" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.