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 Nikon P500 and Sony A37 side-by-side from the front, back and top in their relative dimensions. Nikon P500 has external dimensions of 116 x 84 x 10 mm (4.57 x 3.31 x 4.06″) and weighs 494 g (1.09 lb / 17.43 oz) (including batteries). Sony A37 has external dimensions of 124 x 92 x 85 mm (4.88 x 3.62 x 3.35″) and weighs 506 g (1.12 lb / 17.85 oz) (including batteries).
Below you can see the front view size comparison of Nikon P500 and Sony A37. Nikon P500 is 8mm narrower and 8mm shorter than Sony A37 but it is also 18mm thicker. As you can tell, actually this is not a fair size comparison since Nikon P500 has a built-in lens but Sony A37 doesn't. Once you put a lens on A37, its thickness will increase significantly.
Here is the back view size comparison of Nikon P500 and Sony A37.
Now lets look at the top view comparison of Nikon P500 and Sony A37.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon P500 is 12g lighter than the Sony A37 but we don't think this will make a significant difference.
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 A37, the total kit will weigh much higher.
Unfortunately neither Nikon Coolpix P500 nor Sony SLT-A37 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 Bridge Cameras with Weather Sealing Top DSLR Cameras with Weather Sealing
LCD Screen Size and Features
Nikon P500's 3" LCD screen is slightly larger than Sony A37's 2.6" screen.
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.