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 Nikon 1 V3 and Panasonic ZS20 side-by-side from the front, back and top in their relative dimensions. Nikon 1 V3 has external dimensions of 111 x 65 x 33 mm (4.37 x 2.56 x 1.3″) and weighs 381 g (0.84 lb / 13.44 oz) (including batteries). Panasonic ZS20 has external dimensions of 105 x 59 x 28 mm (4.13 x 2.32 x 1.1″) and weighs 206 g (0.45 lb / 7.27 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon 1 V3 and the Panasonic ZS20. Panasonic ZS20 is clearly the smaller of the two cameras. Its body is 6mm narrower, 6mm shorter and 5mm thinner than Nikon 1 V3. As you can tell, actually this is not a fair size comparison since Panasonic ZS20 has a built-in lens but Nikon 1 V3 doesn't. Once you put a lens on 1 V3, its thickness will increase significantly.
Here is the back view size comparison of the Nikon 1 V3 and Panasonic ZS20.
Now lets look at the top view comparison of Nikon 1 V3 and Panasonic ZS20.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS20 is significantly lighter (175g ) than the Nikon 1 V3 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 1 V3, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Nikon 1 V3 nor Panasonic Lumix DMC-ZS20 (Lumix DMC-TZ30) provides any type of weather sealing in their bodies, 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 Mirrorless Cameras with Weather Sealing Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Nikon 1 V3 and Panasonic ZS20's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Nikon 1 V3 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 Panasonic ZS20 has a fixed type screen which provides less flexibility in shooting positions compared to 1 V3.