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 180 and Pentax RZ18 side-by-side from the front, back and top in their relative dimensions. Canon ELPH 180 has external dimensions of 95 x 54 x 22 mm (3.74 x 2.13 x 0.87″) and weighs 126 g (0.28 lb / 4.44 oz) (including batteries). Pentax RZ18 has external dimensions of 97 x 61 x 33 mm (3.82 x 2.4 x 1.3″) and weighs 178 g (0.39 lb / 6.28 oz) (including batteries).
Below you can see the front-view size comparison of the Canon ELPH 180 and the Pentax RZ18. Canon ELPH 180 is clearly the smaller of the two cameras. Its body is 2mm narrower, 7mm shorter and 11mm thinner than Pentax RZ18.
Here is the back view size comparison of the Canon ELPH 180 and Pentax RZ18.
Now lets look at the top view comparison of Canon ELPH 180 and Pentax RZ18.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon ELPH 180 is significantly lighter (52g ) than the Pentax RZ18 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the RZ18, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the ELPH 180.
LCD Screen Size and Features
Pentax RZ18's 3.00" LCD screen is slightly larger than Canon ELPH 180's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.