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 Panasonic ZS1 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). Panasonic ZS1 has external dimensions of 103 x 60 x 33 mm (4.06 x 2.36 x 1.3″) and weighs 229 g (0.50 lb / 8.08 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax MX-1 and the Panasonic ZS1. Panasonic ZS1 is clearly the smaller of the two cameras. Its body is 19mm narrower, 1mm shorter and 18mm thinner than Pentax MX-1.
Here is the back view size comparison of the Pentax MX-1 and Panasonic ZS1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS1 is significantly lighter (162g ) than the Pentax MX-1 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Pentax MX-1 nor Panasonic Lumix DMC-ZS1 (Lumix DMC-TZ6) 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 Panasonic ZS1'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, Panasonic ZS1 has a fixed type screen which provides less flexibility in shooting positions compared to MX-1.