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 Panasonic FZ1000 II and Panasonic S1 side-by-side from the front, back and top in their relative dimensions. Panasonic FZ1000 II has external dimensions of 136 x 97 x 132 mm (5.35 x 3.82 x 5.2″) and weighs 808 g (1.78 lb / 28.50 oz) (including batteries). Panasonic S1 has external dimensions of 149 x 110 x 97 mm (5.87 x 4.33 x 3.82″) and weighs 1021 g (2.25 lb) (including batteries).
Below you can see the front view size comparison of Panasonic FZ1000 II and Panasonic S1. Panasonic FZ1000 II is 13mm narrower and 13mm shorter than Panasonic S1 but it is also 35mm thicker. As you can tell, actually this is not a fair size comparison since Panasonic FZ1000 II has a built-in lens but Panasonic S1 doesn't. Once you put a lens on S1, its thickness will increase significantly.
Here is the back view size comparison of Panasonic FZ1000 II and Panasonic S1.
Now lets look at the top view comparison of Panasonic FZ1000 II and Panasonic S1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic FZ1000 II is significantly lighter (213g ) than the Panasonic S1 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 S1, the total kit will weigh much higher.
Thanks to the weather sealed body of S1, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to FZ1000 II.
LCD Screen Size and Features
Panasonic S1's 3.2" LCD screen is slightly larger than Panasonic FZ1000 II's 3" screen.