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 W810 and Sony H300 side-by-side from the front, back and top in their relative dimensions. Sony W810 has external dimensions of 97 x 56 x 21 mm (3.82 x 2.2 x 0.83″) and weighs 111 g (0.24 lb / 3.92 oz) (including batteries). Sony H300 has external dimensions of 130 x 95 x 122 mm (5.1 x 3.74 x 4.81″) and weighs 590 g (1.30 lb / 20.81 oz) (including batteries).
Below you can see the front-view size comparison of the Sony W810 and the Sony H300. Sony W810 is clearly the smaller of the two cameras. Its body is 33mm narrower, 39mm shorter and 101mm thinner than Sony H300.
Here is the back view size comparison of the Sony W810 and Sony H300.
Now lets look at the top view comparison of Sony W810 and Sony H300.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony W810 is significantly lighter (479g ) than the Sony H300 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Sony Cyber-shot DSC-W810 nor Sony Cyber-shot DSC-H300 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 Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Sony H300's 3.00" LCD screen is slightly larger than Sony W810's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.