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 A900 and Panasonic GX85 side-by-side from the front, back and top in their relative dimensions. Nikon A900 has external dimensions of 113 x 67 x 40 mm (4.45 x 2.64 x 1.57″) and weighs 289 g (0.64 lb / 10.19 oz) (including batteries). Panasonic GX85 has external dimensions of 122 x 71 x 44 mm (4.8 x 2.8 x 1.73��) and weighs 426 g (0.94 lb / 15.03 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon A900 and the Panasonic GX85. Nikon A900 is clearly the smaller of the two cameras. Its body is 9mm narrower, 4mm shorter and 4mm thinner than Panasonic GX85. As you can tell, actually this is not a fair size comparison since Nikon A900 has a built-in lens but Panasonic GX85 doesn't. Once you put a lens on GX85, its thickness will increase significantly.
Here is the back view size comparison of the Nikon A900 and Panasonic GX85.
Now lets look at the top view comparison of Nikon A900 and Panasonic GX85.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon A900 is significantly lighter (137g ) than the Panasonic GX85 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 GX85, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Nikon Coolpix A900 nor Panasonic Lumix DMC-GX85 (Lumix DMC-GX80 / Lumix DMC-GX7 Mark II) 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 Compact Cameras with Weather Sealing Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Nikon A900 and Panasonic GX85's LCD screens have the same diagonal size of 3.00 inches.
Both cameras feature
Tilting screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels.