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 Pentax MX-1 and Fujifilm S8100fd side-by-side from the front, back and top in their relative dimensions. 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). Fujifilm S8100fd has external dimensions of 111 x 78 x 79 mm (4.38 x 3.08 x 3.12″) and weighs 405 g (0.89 lb / 14.29 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax MX-1 and the Fujifilm S8100fd. Pentax MX-1 is 17mm shorter and 28mm thinner than Fujifilm S8100fd but it is also 11mm wider.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax MX-1 is 14g lighter than the Fujifilm S8100fd but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Pentax MX-1 nor Fujifilm FinePix S8100fd 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 Fujifilm S8100fd's 2.5" 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, Fujifilm S8100fd has a fixed type screen which provides less flexibility in shooting positions compared to MX-1.