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 Sony A100 and Olympus TG-2 iHS side-by-side from the front, back and top in their relative dimensions. Sony A100 has external dimensions of 133 x 95 x 71 mm (5.24 x 3.74 x 2.8″) and weighs 638 g (1.41 lb / 22.50 oz) (including batteries). Olympus TG-2 iHS has external dimensions of 111 x 67 x 29 mm (4.37 x 2.64 x 1.14″) and weighs 230 g (0.51 lb / 8.11 oz) (including batteries).
Below you can see the front view size comparison of Sony A100 and Olympus TG-2 iHS. Olympus TG-2 iHS is clearly the smaller of the two cameras. Its body is 22mm narrower, 28mm shorter and 42mm thinner than Sony A100. As you can tell, actually this is not a fair size comparison since Olympus TG-2 iHS has a built-in lens but Sony A100 doesn't. Once you put a lens on A100, 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.
Olympus TG-2 iHS is significantly lighter (408g ) than the Sony A100 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 A100, the total kit will weigh much higher.
Thanks to the weather sealed body of TG-2 iHS, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to A100.
LCD Screen Size and Features
Olympus TG-2 iHS's 3" LCD screen is slightly larger than Sony A100's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.