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 Casio EX-Z450 and Nikon P610 side-by-side from the front, back and top in their relative dimensions. Casio EX-Z450 has external dimensions of 81 x 56 x 21 mm (3.19 x 2.2 x 0.83″) and weighs 128 g (0.28 lb / 4.52 oz) (including batteries). Nikon P610 has external dimensions of 125 x 85 x 107 mm (4.92 x 3.35 x 4.21″) and weighs 565 g (1.25 lb / 19.93 oz) (including batteries).
Below you can see the front view size comparison of Casio EX-Z450 and Nikon P610. Casio EX-Z450 is clearly the smaller of the two cameras. Its body is 44mm narrower, 29mm shorter and 86mm thinner than Nikon P610.
Here is the back view size comparison of Casio EX-Z450 and Nikon P610.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Casio EX-Z450 is significantly lighter (437g ) than the Nikon P610 which may become a big advantage especially on long walking trips.
Unfortunately neither Casio Exilim EX-Z450 nor Nikon Coolpix P610 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 Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Casio EX-Z450 and Nikon P610's LCD screens has the same diagonal size of 3".
On the other hand, Nikon P610 sports a Fully Articulated screen
which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. Casio EX-Z450's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to P610.