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 P510 and Canon G3 X side-by-side from the front, back and top in their relative dimensions. Nikon P510 has external dimensions of 120 x 83 x 102 mm (4.72 x 3.27 x 4.02″) and weighs 555 g (1.22 lb / 19.58 oz) (including batteries). Canon G3 X has external dimensions of 123 x 77 x 105 mm (4.84 x 3.03 x 4.13″) and weighs 733 g (1.62 lb / 25.86 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon P510 and the Canon G3 X. Nikon P510 is 3mm narrower and 3mm thinner than Canon G3 X but it is also 6mm taller.
Here is the back view size comparison of the Nikon P510 and Canon G3 X.
Now lets look at the top view comparison of Nikon P510 and Canon G3 X.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon P510 is significantly lighter (178g ) than the Canon G3 X which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the G3 X, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the P510.
LCD Screen Size and Features
Canon G3 X's 3.20" LCD screen is slightly larger than Nikon P510's 3 screen.