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 X-5 and Canon SX40 HS side-by-side from the front, back and top in their relative dimensions. Pentax X-5 has external dimensions of 119 x 86 x 107 mm (4.69 x 3.39 x 4.21″) and weighs 595 g (1.31 lb / 20.99 oz) (including batteries). Canon SX40 HS has external dimensions of 123 x 92 x 108 mm (4.84 x 3.62 x 4.25″) and weighs 600 g (1.32 lb / 21.16 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax X-5 and the Canon SX40 HS. Pentax X-5 is clearly the smaller of the two cameras. Its body is 4mm narrower, 6mm shorter and 1mm thinner than Canon SX40 HS.
Now lets look at the top view comparison of Pentax X-5 and Canon SX40 HS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax X-5 is 5g lighter than the Canon SX40 HS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Pentax X-5 nor Canon PowerShot SX40 HS 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 Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Pentax X-5's 3.00" LCD screen is slightly larger than Canon SX40 HS's 2.7 screen.