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 Olympus TG-810 and Panasonic ZS40 side-by-side from the front, back and top in their relative dimensions. Olympus TG-810 has external dimensions of 100 x 65 x 26 mm (3.94 x 2.56 x 1.02″) 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 the Olympus TG-810 and the Panasonic ZS40. Olympus TG-810 is 11mm narrower and 8mm thinner than Panasonic ZS40 but it is also 1mm taller.
Comparison image of the Olympus TG-810 and the Panasonic ZS40 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Olympus TG-810 and Panasonic ZS40.
Comparison image of the Olympus TG-810 and the Panasonic ZS40 Size and Weight - Back View
Now lets look at the top view comparison of Olympus TG-810 and Panasonic ZS40.
Top View Comparison image of the Olympus TG-810 and the Panasonic ZS40 Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-810 is 25g lighter than the Panasonic ZS40 but we don't think this will make a significant difference.
Weather Sealing
Thanks to the weather-sealed body of the TG-810, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the ZS40.
LCD Screen Size and Features
Olympus TG-810 and Panasonic ZS40'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.