Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Canon ELPH 150 IS and Olympus E-PL5 side-by-side from the front, back and top in their relative dimensions. Canon ELPH 150 IS has external dimensions of 95 x 57 x 24 mm (3.74 x 2.24 x 0.94″) and weighs 142 g (0.31 lb / 5.01 oz) (including batteries). Olympus E-PL5 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 Canon ELPH 150 IS and Olympus E-PL5. Canon ELPH 150 IS is clearly the smaller of the two cameras. Its body is 16mm narrower, 7mm shorter and 14mm thinner than Olympus E-PL5. As you can tell, actually this is not a fair size comparison since Canon ELPH 150 IS has a built-in lens but Olympus E-PL5 doesn't. Once you put a lens on E-PL5, its thickness will increase significantly.
Comparison image of Canon ELPH 150 IS and Olympus E-PL5 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Canon ELPH 150 IS and Olympus E-PL5.
Comparison image of Canon ELPH 150 IS and Olympus E-PL5 Size and Weight - Back View
Now lets look at the top view comparison of Canon ELPH 150 IS and Olympus E-PL5.
Top View Comparison image of Canon ELPH 150 IS and Olympus E-PL5 Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon ELPH 150 IS is significantly lighter (183g ) than the Olympus E-PL5 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-PL5, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither Canon PowerShot ELPH 150 IS (IXUS 155) nor Olympus PEN E-PL5 provides any type of weather sealing in their body, 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 E-PL5's 3.00" LCD screen is slightly larger than Canon ELPH 150 IS's 2.7" screen.
In addition to the size advantage, Olympus E-PL5 LCD screen also has a
Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Canon ELPH 150 IS has a fixed type screen which provides less flexibility in shooting positions compared to E-PL5.