Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Sony RX100 IV and Leica D-Lux 7 side-by-side from the front, back and top in their relative dimensions. Sony RX100 IV has external dimensions of 102 x 58 x 41 mm (4.02 x 2.28 x 1.61″) and weighs 298 g (0.66 lb / 10.51 oz) (including batteries). Leica D-Lux 7 has external dimensions of 118 x 66 x 64 mm (4.65 x 2.6 x 2.52″) and weighs 403 g (0.89 lb / 14.22 oz) (including batteries).
Below you can see the front view size comparison of Sony RX100 IV and Leica D-Lux 7. Sony RX100 IV is clearly the smaller of the two cameras. Its body is 16mm narrower, 8mm shorter and 23mm thinner than Leica D-Lux 7.
Here is the back view size comparison of Sony RX100 IV and Leica D-Lux 7.
Now lets look at the top view comparison of Sony RX100 IV and Leica D-Lux 7.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony RX100 IV is significantly lighter (105g ) than the Leica D-Lux 7 which may become a big advantage especially on long walking trips.
Unfortunately neither Sony Cyber-shot DSC-RX100 IV nor Leica D-Lux 7 provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Sony RX100 IV and Leica D-Lux 7's LCD screens has the same diagonal size of 3".
On the other hand, Sony RX100 IV features a Tilting screen
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Leica D-Lux 7 has a fixed type screen which provides less flexibility in shooting positions compared to RX100 IV.