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 ELPH 140 IS and Panasonic GF8 side-by-side from the front, back and top in their relative dimensions. Canon ELPH 140 IS has external dimensions of 95 x 54 x 22 mm (3.74 x 2.13 x 0.87″) and weighs 127 g (0.28 lb / 4.48 oz) (including batteries). Panasonic GF8 has external dimensions of 107 x 65 x 33 mm (4.21 x 2.56 x 1.3″) and weighs 266 g (0.59 lb / 9.38 oz) (including batteries).
Below you can see the front-view size comparison of the Canon ELPH 140 IS and the Panasonic GF8. Canon ELPH 140 IS is clearly the smaller of the two cameras. Its body is 12mm narrower, 11mm shorter and 11mm thinner than Panasonic GF8. As you can tell, actually this is not a fair size comparison since Canon ELPH 140 IS has a built-in lens but Panasonic GF8 doesn't. Once you put a lens on GF8, its thickness will increase significantly.
Here is the back view size comparison of the Canon ELPH 140 IS and Panasonic GF8.
Now lets look at the top view comparison of Canon ELPH 140 IS and Panasonic GF8.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon ELPH 140 IS is significantly lighter (139g ) than the Panasonic GF8 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 GF8, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Canon PowerShot ELPH 140 IS (IXUS 150) nor Panasonic Lumix DMC-GF8 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
Panasonic GF8's 3.00" LCD screen is slightly larger than Canon ELPH 140 IS's 2.7" screen.
In addition to the size advantage, Panasonic GF8 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 140 IS has a fixed type screen which provides less flexibility in shooting positions compared to GF8.