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 S3100 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 S3100 has external dimensions of 94 x 58 x 18 mm (3.7 x 2.28 x 0.71″) and weighs 118 g (0.26 lb / 4.16 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax RS1500 and the Nikon S3100. Pentax RS1500 has the same height with Nikon S3100. On the other hand, with a width of 114mm, it is 20 wider and also with a thickness of 28mm, it is 10mm thicker than Nikon S3100.
Comparison image of the Pentax RS1500 and the Nikon S3100 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Pentax RS1500 and Nikon S3100.
Comparison image of the Pentax RS1500 and the Nikon S3100 Size and Weight - Back View
Now lets look at the top view comparison of Pentax RS1500 and Nikon S3100.
Top View Comparison image of the Pentax RS1500 and the Nikon S3100 Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S3100 is significantly lighter (39g ) than the Pentax RS1500 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 S3100 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Pentax RS1500 and Nikon S3100's LCD screens have the same diagonal size of 2.70 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.
