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 W710 and Sony W730 side-by-side from the front, back and top in their relative dimensions. Sony W710 has external dimensions of 97 x 55 x 20 mm (3.82 x 2.17 x 0.79″) and weighs 114 g (0.25 lb / 4.02 oz) (including batteries). Sony W730 has external dimensions of 93 x 52 x 22 mm (3.66 x 2.05 x 0.87″) and weighs 122 g (0.27 lb / 4.30 oz) (including batteries).
Below you can see the front-view size comparison of the Sony W710 and the Sony W730. Sony W730 is 4mm narrower and 3mm shorter than Sony W710 but it is also 2mm thicker.
Here is the back view size comparison of the Sony W710 and Sony W730.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony W710 is 8g lighter than the Sony W730 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Sony Cyber-shot DSC-W710 nor Sony Cyber-shot DSC-W730 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 W710 and Sony W730's LCD screens have the same diagonal size of 2.70 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.