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 Olympus E-30 and Sony WX30 side-by-side from the front, back and top in their relative dimensions. Olympus E-30 has external dimensions of 142 x 108 x 75 mm (5.59 x 4.25 x 2.95″) and weighs 695 g (1.53 lb / 24.52 oz) (including batteries). Sony WX30 has external dimensions of 92 x 52 x 19 mm (3.62 x 2.05 x 0.75″) and weighs 117 g (0.26 lb / 4.13 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus E-30 and the Sony WX30. Sony WX30 is clearly the smaller of the two cameras. Its body is 50mm narrower, 56mm shorter and 56mm thinner than Olympus E-30. As you can tell, actually this is not a fair size comparison since Sony WX30 has a built-in lens but Olympus E-30 doesn't. Once you put a lens on E-30, its thickness will increase significantly.
Now lets look at the top view comparison of Olympus E-30 and Sony WX30.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony WX30 is significantly lighter (578g ) than the Olympus E-30 which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on E-30, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Olympus E-30 nor Sony Cyber-shot DSC-WX30 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 DSLR Cameras with Weather Sealing Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Sony WX30's 3.00" LCD screen is slightly larger than Olympus E-30's 2.7" screen.
On the other hand, Olympus E-30 sports a
Fully Articulated screen which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over-the-head levels, and especially very useful for shooting selfies and video. On the other hand, Sony WX30 has a fixed type screen which provides almost no flexibility in shooting positions compared to E-30.