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 Canon SX150 IS 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). Canon SX150 IS has external dimensions of 113 x 73 x 46 mm (4.45 x 2.87 x 1.81″) and weighs 306 g (0.67 lb / 10.79 oz) (including batteries).
Below you can see the front view size comparison of Samsung TL225 and Canon SX150 IS. Samsung TL225 is clearly the smaller of the two cameras. Its body is 13mm narrower, 13mm shorter and 27mm thinner than Canon SX150 IS.
Now lets look at the top view comparison of Samsung TL225 and Canon SX150 IS.
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 (119g ) than the Canon SX150 IS which may become a big advantage especially on long walking trips.
Unfortunately neither Samsung TL225 (ST550) nor Canon PowerShot SX150 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
Samsung TL225's 3.5" LCD screen is slightly larger than Canon SX150 IS's 3" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.