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 Samsung EX2F 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). Samsung EX2F has external dimensions of 112 x 62 x 29 mm (4.41 x 2.44 x 1.14″) and weighs 294 g (0.65 lb / 10.37 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS3 and Samsung EX2F. Panasonic ZS3 is 9mm narrower and 2mm shorter than Samsung EX2F but it is also 4mm thicker.
Now lets look at the top view comparison of Panasonic ZS3 and Samsung EX2F.
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 (65g ) than the Samsung EX2F which may become a big advantage especially on long walking trips.
Unfortunately neither Panasonic Lumix DMC-ZS3 (Lumix DMC-TZ7) nor Samsung EX2F 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
Panasonic ZS3 and Samsung EX2F's LCD screens has the same diagonal size of 3".
On the other hand, Samsung EX2F sports a Fully Articulated screen
which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. Panasonic ZS3's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to EX2F.