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 Panasonic LX100 and Olympus SP-820UZ side-by-side from the front, back and top in their relative dimensions. Panasonic LX100 has external dimensions of 115 x 66 x 55 mm (4.53 x 2.6 x 2.17″) and weighs 393 g (0.87 lb / 13.86 oz) (including batteries). Olympus SP-820UZ has external dimensions of and weighs 485 g (1.07 lb / 17.11 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic LX100 and the Olympus SP-820UZ. Panasonic LX100 is clearly the smaller of the two cameras. Its body is 2mm narrower, 12mm shorter and 38mm thinner than Olympus SP-820UZ.
Now lets look at the top view comparison of Panasonic LX100 and Olympus SP-820UZ.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic LX100 is significantly lighter (92g ) than the Olympus SP-820UZ which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-LX100 nor Olympus Stylus SP-820UZ 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
Panasonic LX100 and Olympus SP-820UZ'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.