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 Pentax RZ18 and Sony TX20 side-by-side from the front, back and top in their relative dimensions. 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). Sony TX20 has external dimensions of 96 x 56 x 18 mm (3.78 x 2.2 x 0.71″) and weighs 133 g (0.29 lb / 4.69 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax RZ18 and the Sony TX20. Sony TX20 is clearly the smaller of the two cameras. Its body is 1mm narrower, 5mm shorter and 15mm thinner than Pentax RZ18.
Comparison image of the Pentax RZ18 and the Sony TX20 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Pentax RZ18 and Sony TX20.
Comparison image of the Pentax RZ18 and the Sony TX20 Size and Weight - Back View
Now lets look at the top view comparison of Pentax RZ18 and Sony TX20.
Top View Comparison image of the Pentax RZ18 and the Sony TX20 Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony TX20 is significantly lighter (45g ) than the Pentax RZ18 which may become a big advantage especially on long walking trips.
Weather Sealing
Both the RZ18 and the TX20 have weather sealings in their bodies, making them resistant to water and dust.
LCD Screen Size and Features
Pentax RZ18 and Sony TX20'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.
