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 Olympus TG-310 and Pentax MX-1 side-by-side from the front, back and top in their relative dimensions. Olympus TG-310 has external dimensions of 96 x 63 x 23 mm (3.78 x 2.48 x 0.91″) and weighs 155 g (0.34 lb / 5.47 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 Olympus TG-310 and the Pentax MX-1. Olympus TG-310 is 26mm narrower and 28mm thinner than Pentax MX-1 but it is also 2mm taller.
Now lets look at the top view comparison of Olympus TG-310 and Pentax MX-1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-310 is significantly lighter (236g ) than the Pentax MX-1 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-310, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the MX-1.
LCD Screen Size and Features
Pentax MX-1's 3.00" LCD screen is slightly larger than Olympus TG-310'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, Olympus TG-310 has a fixed type screen which provides less flexibility in shooting positions compared to MX-1.