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 a3500 and Pentax K-S2 side-by-side from the front, back and top in their relative dimensions. Sony a3500 has external dimensions of 128 x 91 x 85 mm (5.04 x 3.58 x 3.35″) and weighs 411 g (0.91 lb / 14.50 oz) (including batteries). Pentax K-S2 has external dimensions of 123 x 91 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 the Sony a3500 and the Pentax K-S2. Sony a3500 has the same height with Pentax K-S2. On the other hand, with a width of 128mm, it is 5 wider and also with a thickness of 85mm, it is 12mm thicker than Pentax K-S2.
Now lets look at the top view comparison of Sony a3500 and Pentax K-S2.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony a3500 is significantly lighter (267g ) than the Pentax K-S2 which may become a big advantage especially on long walking trips.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you also have to take into account the lenses that you will be using with these bodies. Since both Sony a3500 and Pentax K-S2 have the same APS-C sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.
Weather Sealing
Thanks to the weather-sealed body of the K-S2, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the a3500.
LCD Screen Size and Features
Sony a3500 and Pentax K-S2's LCD screens have the same diagonal size of 3.00 inches.
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. Sony a3500's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to K-S2.