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 Panasonic ZS3 and Pentax RS1500 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS3 has external dimensions of 103 x 60 x 33 mm (4.06 x 2.36 x 1.3″) and weighs 229 g (0.50 lb / 8.08 oz) (including batteries). Pentax RS1500 has external dimensions of 114 x 58 x 28 mm (4.49 x 2.28 x 1.1″) and weighs 157 g (0.35 lb / 5.54 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS3 and Pentax RS1500. Pentax RS1500 is 2mm shorter and 5mm thinner than Panasonic ZS3 but it is also 11mm wider.
Here is the back view size comparison of Panasonic ZS3 and Pentax RS1500.
Now lets look at the top view comparison of Panasonic ZS3 and Pentax RS1500.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Pentax RS1500 is significantly lighter (72g ) than the Panasonic ZS3 which may become a big advantage especially on long walking trips.
Thanks to the weather sealed body of RS1500, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to ZS3.
LCD Screen Size and Features
Panasonic ZS3's 3" LCD screen is slightly larger than Pentax RS1500's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.