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 A2100 IS and Olympus E-PL6 side-by-side from the front, back and top in their relative dimensions. Canon A2100 IS has external dimensions of 102 x 64 x 32 mm (4.02 x 2.52 x 1.26″) and weighs 185 g (0.41 lb / 6.53 oz) (including batteries). Olympus E-PL6 has external dimensions of 111 x 64 x 38 mm (4.37 x 2.52 x 1.5″) and weighs 325 g (0.72 lb / 11.46 oz) (including batteries).
Below you can see the front-view size comparison of the Canon A2100 IS and the Olympus E-PL6. Canon A2100 IS is 9mm narrower and 6mm thinner than Canon A2100 IS but they have the same height of 64mm. As you can tell, actually this is not a fair size comparison since Canon A2100 IS has a built-in lens but Olympus E-PL6 doesn't. Once you put a lens on E-PL6, its thickness will increase significantly.
Here is the back view size comparison of the Canon A2100 IS and Olympus E-PL6.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon A2100 IS is significantly lighter (140g ) than the Olympus E-PL6 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-PL6, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Canon PowerShot A2100 IS nor Olympus PEN E-PL6 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
Canon A2100 IS and Olympus E-PL6's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Olympus E-PL6 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 Canon A2100 IS has a fixed type screen which provides less flexibility in shooting positions compared to E-PL6.