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 Casio EX-FC100 and Pentax MX-1 side-by-side from the front, back and top in their relative dimensions. Casio EX-FC100 has external dimensions of 100 x 59 x 23 mm (3.94 x 2.32 x 0.91″) and weighs 156 g (0.34 lb / 5.50 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 the Casio EX-FC100 and the Pentax MX-1. Casio EX-FC100 is clearly the smaller of the two cameras. Its body is 22mm narrower, 2mm shorter and 28mm thinner than Pentax MX-1.
Here is the back view size comparison of the Casio EX-FC100 and Pentax MX-1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-FC100 is significantly lighter (235g ) than the Pentax MX-1 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Casio Exilim EX-FC100 nor Pentax MX-1 provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Pentax MX-1's 3.00" LCD screen is slightly larger than Casio EX-FC100'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, Casio EX-FC100 has a fixed type screen which provides less flexibility in shooting positions compared to MX-1.