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 SX720 HS and Panasonic ZS100 side-by-side from the front, back and top in their relative dimensions. Canon SX720 HS has external dimensions of 110 x 64 x 36 mm (4.33 x 2.52 x 1.42″) and weighs 270 g (0.60 lb / 9.52 oz) (including batteries). Panasonic ZS100 has external dimensions of 111 x 65 x 44 mm (4.37 x 2.56 x 1.73″) and weighs 312 g (0.69 lb / 11.01 oz) (including batteries).
Below you can see the front-view size comparison of the Canon SX720 HS and the Panasonic ZS100. Canon SX720 HS is clearly the smaller of the two cameras. Its body is 1mm narrower, 1mm shorter and 8mm thinner than Panasonic ZS100.
Here is the back view size comparison of the Canon SX720 HS and Panasonic ZS100.
Now lets look at the top view comparison of Canon SX720 HS and Panasonic ZS100.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon SX720 HS is 42g lighter than the Panasonic ZS100 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Canon PowerShot SX720 HS nor Panasonic Lumix DMC-ZS100 (Lumix DMC-TZ100) 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 SX720 HS and Panasonic ZS100'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.