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 Fujifilm F550 EXR and Panasonic ZS40 side-by-side from the front, back and top in their relative dimensions. Fujifilm F550 EXR has external dimensions of 104 x 63 x 33 mm (4.09 x 2.48 x 1.3″) and weighs 215 g (0.47 lb / 7.58 oz) (including batteries). Panasonic ZS40 has external dimensions of 111 x 64 x 34 mm (4.37 x 2.52 x 1.34″) and weighs 240 g (0.53 lb / 8.47 oz) (including batteries).
Below you can see the front view size comparison of Fujifilm F550 EXR and Panasonic ZS40. Fujifilm F550 EXR is clearly the smaller of the two cameras. Its body is 7mm narrower, 1mm shorter and 1mm thinner than Panasonic ZS40.
Here is the back view size comparison of Fujifilm F550 EXR and Panasonic ZS40.
Now lets look at the top view comparison of Fujifilm F550 EXR and Panasonic ZS40.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Fujifilm F550 EXR is 25g lighter than the Panasonic ZS40 but we don't think this will make a significant difference.
Unfortunately neither Fujifilm FinePix F550 EXR nor Panasonic Lumix DMC-ZS40 (Lumix DMC-TZ60) 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
Fujifilm F550 EXR and Panasonic ZS40's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.