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 RS1500 and Pentax MX-1 side-by-side from the front, back and top in their relative dimensions. 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). Pentax MX-1 has external dimensions of 122 x 61 x 51 mm (4.8 x 2.4 x 2.01″) and weighs 391 g (0.86 lb / 13.79 oz) (including batteries).
Below you can see the front view size comparison of Pentax RS1500 and Pentax MX-1. Pentax RS1500 is clearly the smaller of the two cameras. Its body is 8mm narrower, 3mm shorter and 23mm thinner than Pentax MX-1.
Here is the back view size comparison of Pentax RS1500 and Pentax MX-1.
Now lets look at the top view comparison of Pentax RS1500 and Pentax MX-1.
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 (234g ) than the Pentax MX-1 which may become a big advantage especially on long walking trips.
With its weather sealed body, we believe that RS1500 has a big advantage over MX-1 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Pentax MX-1's 3" LCD screen is slightly larger than Pentax RS1500's 2.7" screen.
In addition to the size advantage, Pentax MX-1 LCD screen also has a Tilting feature
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Pentax RS1500 has a fixed type screen which provides less flexibility in shooting positions compared to MX-1.