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 SP-820UZ and Olympus E-M10 II side-by-side from the front, back and top in their relative dimensions. Olympus SP-820UZ has external dimensions of and weighs 485 g (1.07 lb / 17.11 oz) (including batteries). Olympus E-M10 II has external dimensions of 120 x 83 x 47 mm (4.72 x 3.27 x 1.85″) and weighs 390 g (0.86 lb / 13.76 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus SP-820UZ and the Olympus E-M10 II. Olympus SP-820UZ is 3mm narrower and 5mm shorter than Olympus E-M10 II but it is also 46mm thicker. As you can tell, actually this is not a fair size comparison since Olympus SP-820UZ has a built-in lens but Olympus E-M10 II doesn't. Once you put a lens on E-M10 II, its thickness will increase significantly.
Now lets look at the top view comparison of Olympus SP-820UZ and Olympus E-M10 II.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus E-M10 II is significantly lighter (95g ) than the Olympus SP-820UZ which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on E-M10 II, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Olympus Stylus SP-820UZ nor Olympus OM-D E-M10 II 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 Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Olympus SP-820UZ and Olympus E-M10 II's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Olympus E-M10 II features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels whereas the Olympus SP-820UZ has a fixed type screen which provides less flexibility in shooting positions compared to E-M10 II.