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 Sony TX200V and Panasonic GX7 side-by-side from the front, back and top in their relative dimensions. Sony TX200V has external dimensions of 96 x 58 x 16 mm (3.78 x 2.28 x 0.63″) and weighs 129 g (0.28 lb / 4.55 oz) (including batteries). Panasonic GX7 has external dimensions of 123 x 71 x 55 mm (4.83 x 2.78 x 2.15″) and weighs 402 g (0.89 lb / 14.18 oz) (including batteries).
Below you can see the front-view size comparison of the Sony TX200V and the Panasonic GX7. Sony TX200V is clearly the smaller of the two cameras. Its body is 27mm narrower, 13mm shorter and 39mm thinner than Panasonic GX7. As you can tell, actually this is not a fair size comparison since Sony TX200V has a built-in lens but Panasonic GX7 doesn't. Once you put a lens on GX7, its thickness will increase significantly.
Here is the back view size comparison of the Sony TX200V and Panasonic GX7.
Now lets look at the top view comparison of Sony TX200V and Panasonic GX7.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony TX200V is significantly lighter (273g ) than the Panasonic GX7 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 GX7, the total kit will weigh much higher.
Weather Sealing
With its weather-sealed body, we believe that the TX200V has a big advantage over the GX7 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Sony TX200V's 3.30" LCD screen is slightly larger than Panasonic GX7's 3" screen.