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 Pentax RS1500 and Nikon P510 side-by-side from the front, back and top in their relative dimensions. Pentax RS1500 has external dimensions of 114 x 58 x 28 mm (4.49 x 2.28 x 1.1″) and weighs 157 g (0.35 lb / 5.54 oz) (including batteries). 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).
Below you can see the front-view size comparison of the Pentax RS1500 and the Nikon P510. Pentax RS1500 is clearly the smaller of the two cameras. Its body is 6mm narrower, 25mm shorter and 74mm thinner than Nikon P510.
Here is the back view size comparison of the Pentax RS1500 and Nikon P510.
Now lets look at the top view comparison of Pentax RS1500 and Nikon P510.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax RS1500 is significantly lighter (398g ) than the Nikon P510 which may become a big advantage especially on long walking trips.
Weather Sealing
With its weather-sealed body, we believe that the RS1500 has a big advantage over the P510 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Nikon P510's 3.00" LCD screen is slightly larger than Pentax RS1500's 2.7" screen.
In addition to the size advantage, Nikon P510 LCD screen also has a
Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. On the other hand, Pentax RS1500 has a fixed type screen which provides less flexibility in shooting positions compared to P510.