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 Pentax K-500 and Pentax K-S2 side-by-side from the front, back and top in their relative dimensions. Pentax K-500 has external dimensions of 130 x 97 x 71 mm (5.12 x 3.82 x 2.8″) and weighs 646 g (1.42 lb / 22.79 oz) (including batteries). Pentax K-S2 has external dimensions of 91 x 123 x 73 mm (3.58 x 4.84 x 2.87″) and weighs 678 g (1.49 lb / 23.92 oz) (including batteries).
Below you can see the front view size comparison of Pentax K-500 and Pentax K-S2. Pentax K-500 is 26mm shorter and 2mm thinner than Pentax K-S2 but it is also 39mm wider.
Now lets look at the top view comparison of Pentax K-500 and Pentax K-S2.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Pentax K-500 is 32g lighter than the Pentax K-S2 but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since both Pentax K-500 and Pentax K-S2 have the same Pentax KAF2 lens mount and APS-C sized sensors, lenses will not be a differentiator on total size of the system.
Thanks to the weather sealed body of K-S2, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to K-500.
LCD Screen Size and Features
Pentax K-500 and Pentax K-S2's LCD screens has the same diagonal size of 3".
On the other hand, Pentax K-S2 sports a Fully Articulated screen
which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. Pentax K-500's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to K-S2.