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 A10 and Nikon S2900 side-by-side from the front, back and top in their relative dimensions. Nikon A10 has external dimensions of 96 x 59 x 29 mm (3.78 x 2.32 x 1.14″) and weighs 160 g (0.35 lb / 5.64 oz) (including batteries). Nikon S2900 has external dimensions of 95 x 59 x 20 mm (3.74 x 2.32 x 0.79″) and weighs 119 g (0.26 lb / 4.20 oz) (including batteries).
Below you can see the front view size comparison of Nikon A10 and Nikon S2900. Nikon A10 has the same height with Nikon S2900. On the other hand, with a width of 96mm, it is 1 wider and also with a thickness of 29mm, it is 9mm thicker than Nikon S2900.
Here is the back view size comparison of Nikon A10 and Nikon S2900.
Now lets look at the top view comparison of Nikon A10 and Nikon S2900.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon S2900 is significantly lighter (41g ) than the Nikon A10 which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix A10 nor Nikon Coolpix S2900 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Nikon A10 and Nikon S2900's LCD screens has the same diagonal size of 2.7".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.