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 TG-3 and Panasonic G9 side-by-side from the front, back and top in their relative dimensions. Olympus TG-3 has external dimensions of 112 x 66 x 31 mm (4.41 x 2.6 x 1.22″) and weighs 247 g (0.54 lb / 8.71 oz) (including batteries). Panasonic G9 has external dimensions of 137 x 97 x 92 mm (5.39 x 3.82 x 3.62″) and weighs 658 g (1.45 lb / 23.21 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus TG-3 and the Panasonic G9. Olympus TG-3 is clearly the smaller of the two cameras. Its body is 25mm narrower, 31mm shorter and 61mm thinner than Panasonic G9. As you can tell, actually this is not a fair size comparison since Olympus TG-3 has a built-in lens but Panasonic G9 doesn't. Once you put a lens on G9, its thickness will increase significantly.
Here is the back view size comparison of the Olympus TG-3 and Panasonic G9.
Now lets look at the top view comparison of Olympus TG-3 and Panasonic G9.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-3 is significantly lighter (411g ) than the Panasonic G9 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 G9, the total kit will weigh much higher.
Weather Sealing
LCD Screen Size and Features
Olympus TG-3 and Panasonic G9's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Panasonic G9 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. Olympus TG-3's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to G9.