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 Sony WX30 and Pentax RZ18 side-by-side from the front, back and top in their relative dimensions. Sony WX30 has external dimensions of 92 x 52 x 19 mm (3.62 x 2.05 x 0.75″) and weighs 117 g (0.26 lb / 4.13 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 Sony WX30 and the Pentax RZ18. Sony WX30 is clearly the smaller of the two cameras. Its body is 5mm narrower, 9mm shorter and 14mm thinner than Pentax RZ18.
Now lets look at the top view comparison of Sony WX30 and Pentax RZ18.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony WX30 is significantly lighter (61g ) 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 WX30.
LCD Screen Size and Features
Sony WX30 and Pentax RZ18's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.