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 Leica Q-P and Sony A7c side-by-side from the front, back and top in their relative dimensions. Leica Q-P has external dimensions of 130 x 80 x 93 mm (5.12 x 3.15 x 3.66″) and weighs 640 g (1.41 lb / 22.58 oz) (including batteries). Sony A7c has external dimensions of 124 x 71 x 60 mm (4.88 x 2.8 x 2.36″) and weighs 509 g (1.12 lb / 17.95 oz) (including batteries).
Below you can see the front-view size comparison of the Leica Q-P and the Sony A7c. Sony A7c is clearly the smaller of the two cameras. Its body is 6mm narrower, 9mm shorter and 33mm thinner than Leica Q-P. As you can tell, actually this is not a fair size comparison since Leica Q-P has a built-in lens but Sony A7c doesn't. Once you put a lens on A7c, its thickness will increase significantly.
Here is the back view size comparison of the Leica Q-P and Sony A7c.
Now lets look at the top view comparison of Leica Q-P and Sony A7c.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony A7c is significantly lighter (131g ) than the Leica Q-P 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 A7c, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the A7c, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the Q-P.
LCD Screen Size and Features
Leica Q-P and Sony A7c's LCD screens have the same diagonal size of 3.00 inches.