Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Canon SD4500 IS and Panasonic ZS50 side-by-side from the front, back and top in their relative dimensions. Canon SD4500 IS has external dimensions of 101 x 59 x 22 mm (3.98 x 2.32 x 0.87″) and weighs 190 g (0.42 lb / 6.70 oz) (including batteries). Panasonic ZS50 has external dimensions of 111 x 65 x 34 mm (4.37 x 2.56 x 1.34″) and weighs 243 g (0.54 lb / 8.57 oz) (including batteries).
Below you can see the front-view size comparison of the Canon SD4500 IS and the Panasonic ZS50. Canon SD4500 IS is clearly the smaller of the two cameras. Its body is 10mm narrower, 6mm shorter and 12mm thinner than Panasonic ZS50.
Now lets look at the top view comparison of Canon SD4500 IS and Panasonic ZS50.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon SD4500 IS is significantly lighter (53g ) than the Panasonic ZS50 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Canon PowerShot SD4500 IS / Digital IXUS 1000 HS / IXY 50S nor Panasonic Lumix DMC-ZS50 (Lumix DMC-TZ70) provides any type of weather sealing in their bodies, 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
Canon SD4500 IS and Panasonic ZS50's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.