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 Canon 550D 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). Canon 550D has external dimensions of 129 x 98 x 62 mm (5.08 x 3.86 x 2.44″) and weighs 530 g (1.17 lb / 18.70 oz) (including batteries).
Below you can see the front view size comparison of Ricoh WG-6 and Canon 550D. Ricoh WG-6 is clearly the smaller of the two cameras. Its body is 11mm narrower, 32mm shorter and 29mm thinner than Canon 550D. As you can tell, actually this is not a fair size comparison since Ricoh WG-6 has a built-in lens but Canon 550D doesn't. Once you put a lens on 550D, its thickness will increase significantly.
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 (284g ) than the Canon 550D 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 550D, the total kit will weigh much higher.
LCD Screen Size and Features
Ricoh WG-6 and Canon 550D's LCD screens has the same diagonal size of 3.00".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.