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 FujiFilm HS20 EXR and Olympus E-M1 side-by-side from the front, back and top in their relative dimensions. FujiFilm HS20 EXR has external dimensions of 131 x 91 x 126 mm (5.16 x 3.58 x 4.96″) and weighs 730 g (1.61 lb / 25.75 oz) (including batteries). Olympus E-M1 has external dimensions of 130 x 94 x 63 mm (5.13 x 3.68 x 2.48″) and weighs 497 g (1.10 lb / 17.53 oz) (including batteries).
Below you can see the front-view size comparison of the FujiFilm HS20 EXR and the Olympus E-M1. Olympus E-M1 is 1mm narrower and 63mm thinner than FujiFilm HS20 EXR but it is also 3mm taller. As you can tell, actually this is not a fair size comparison since FujiFilm HS20 EXR has a built-in lens but Olympus E-M1 doesn't. Once you put a lens on E-M1, its thickness will increase significantly.
Here is the back view size comparison of the FujiFilm HS20 EXR and Olympus E-M1.
Now lets look at the top view comparison of FujiFilm HS20 EXR and Olympus E-M1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus E-M1 is significantly lighter (233g ) than the FujiFilm HS20 EXR 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-M1, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the E-M1, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the HS20 EXR.
LCD Screen Size and Features
FujiFilm HS20 EXR and Olympus E-M1's LCD screens have the same diagonal size of 3.00 inches.
Both cameras feature
Tilting screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels.