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 Panasonic ZS7 and Pentax RS1500 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS7 has external dimensions of 103 x 60 x 33 mm (4.06 x 2.36 x 1.3″) and weighs 218 g (0.48 lb / 7.69 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 the Panasonic ZS7 and the Pentax RS1500. Pentax RS1500 is 2mm shorter and 5mm thinner than Panasonic ZS7 but it is also 11mm wider.
Here is the back view size comparison of the Panasonic ZS7 and Pentax RS1500.
Now lets look at the top view comparison of Panasonic ZS7 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 (61g ) than the Panasonic ZS7 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the RS1500, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the ZS7.
LCD Screen Size and Features
Panasonic ZS7's 3.00" 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.