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 TX30 and Panasonic GF7 side-by-side from the front, back and top in their relative dimensions. Sony TX30 has external dimensions of and weighs 141 g (including batteries). Panasonic GF7 has external dimensions of 107 x 65 x 33 mm (4.21 x 2.56 x 1.3″) and weighs 266 g (0.59 lb / 9.38 oz) (including batteries).
Below you can see the front-view size comparison of the Sony TX30 and the Panasonic GF7. Sony TX30 is clearly the smaller of the two cameras. Its body is 11mm narrower, 6mm shorter and 18mm thinner than Panasonic GF7. As you can tell, actually this is not a fair size comparison since Sony TX30 has a built-in lens but Panasonic GF7 doesn't. Once you put a lens on GF7, its thickness will increase significantly.
Here is the back view size comparison of the Sony TX30 and Panasonic GF7.
Now lets look at the top view comparison of Sony TX30 and Panasonic GF7.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony TX30 is significantly lighter (125g ) than the Panasonic GF7 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 GF7, the total kit will weigh much higher.
Weather Sealing
With its weather-sealed body, we believe that the TX30 has a big advantage over the GF7 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Sony TX30's 3.30" LCD screen is slightly larger than Panasonic GF7's 3" screen.