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 Panasonic G7 and Olympus TG-4 side-by-side from the front, back and top in their relative dimensions. Panasonic G7 has external dimensions of 125 x 86 x 77 mm (4.92 x 3.39 x 3.03″) and weighs 410 g (0.90 lb / 14.46 oz) (including batteries). Olympus TG-4 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).
Below you can see the front-view size comparison of the Panasonic G7 and the Olympus TG-4. Olympus TG-4 is clearly the smaller of the two cameras. Its body is 13mm narrower, 20mm shorter and 46mm thinner than Panasonic G7. As you can tell, actually this is not a fair size comparison since Olympus TG-4 has a built-in lens but Panasonic G7 doesn't. Once you put a lens on G7, its thickness will increase significantly.
Here is the back view size comparison of the Panasonic G7 and Olympus TG-4.
Now lets look at the top view comparison of Panasonic G7 and Olympus TG-4.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-4 is significantly lighter (163g ) than the Panasonic G7 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 G7, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the TG-4, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the G7.
LCD Screen Size and Features
Panasonic G7 and Olympus TG-4's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Panasonic G7 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-4's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to G7.