Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Ricoh WG-6 and Sony A58 side-by-side from the front, back and top in their relative dimensions. Ricoh WG-6 has external dimensions of 118 x 66 x 33 mm (4.65 x 2.6 x 1.3″) and weighs 246 g (0.54 lb / 8.68 oz) (including batteries). Sony A58 has external dimensions of 129 x 95 x 78 mm (5.08 x 3.74 x 3.07″) and weighs 492 g (1.08 lb / 17.35 oz) (including batteries).
Below you can see the front view size comparison of Ricoh WG-6 and Sony A58. Ricoh WG-6 is clearly the smaller of the two cameras. Its body is 11mm narrower, 29mm shorter and 45mm thinner than Sony A58. As you can tell, actually this is not a fair size comparison since Ricoh WG-6 has a built-in lens but Sony A58 doesn't. Once you put a lens on A58, its thickness will increase significantly.
Here is the back view size comparison of Ricoh WG-6 and Sony A58.
Now lets look at the top view comparison of Ricoh WG-6 and Sony A58.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Ricoh WG-6 is significantly lighter (246g ) than the Sony A58 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 A58, the total kit will weigh much higher.
LCD Screen Size and Features
Ricoh WG-6's 3" LCD screen is slightly larger than Sony A58's 2.7" screen.
On the other hand, Sony A58 LCD screen has a Tilting feature
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Ricoh WG-6 has a fixed type screen which provides less flexibility in shooting positions compared to A58.