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 P7800 and Pentax E70 side-by-side from the front, back and top in their relative dimensions. Nikon P7800 has external dimensions of 119 x 78 x 50 mm (4.69 x 3.07 x 1.97″) and weighs 399 g (0.88 lb / 14.07 oz) (including batteries). Pentax E70 has external dimensions of 94 x 61 x 26 mm (3.7 x 2.4 x 1.02″) and weighs 175 g (0.39 lb / 6.17 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon P7800 and the Pentax E70. Pentax E70 is clearly the smaller of the two cameras. Its body is 25mm narrower, 17mm shorter and 24mm thinner than Nikon P7800.
Here is the back view size comparison of the Nikon P7800 and Pentax E70.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax E70 is significantly lighter (224g ) than the Nikon P7800 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Nikon Coolpix P7800 nor Pentax Optio E70 provides any type of weather sealing in their bodies, 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 P7800's 3.00" LCD screen is slightly larger than Pentax E70's 2.4" screen.
Moreover, Nikon P7800 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. On the other hand, Pentax E70 has a fixed type screen which provides almost no flexibility in shooting positions compared to P7800.