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 Sony W650 and Sony W830 side-by-side from the front, back and top in their relative dimensions. Sony W650 has external dimensions of 94 x 56 x 19 mm (3.7 x 2.2 x 0.75″) and weighs 124 g (0.27 lb / 4.37 oz) (including batteries). Sony W830 has external dimensions of 93 x 52 x 23 mm (3.66 x 2.05 x 0.91″) and weighs 122 g (0.27 lb / 4.30 oz) (including batteries).
Below you can see the front-view size comparison of the Sony W650 and the Sony W830. Sony W830 is 1mm narrower and 4mm shorter than Sony W650 but it is also 4mm thicker.
Here is the back view size comparison of the Sony W650 and Sony W830.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony W830 is 2g lighter than the Sony W650 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Sony Cyber-shot DSC-W650 nor Sony Cyber-shot DSC-W830 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
Sony W650's 3.00" LCD screen is slightly larger than Sony W830's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.