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 Canon 77D and Nikon S3700 side-by-side from the front, back and top in their relative dimensions. Canon 77D has external dimensions of 131 x 100 x 76 mm (5.16 x 3.94 x 2.99″) and weighs 540 g (1.19 lb / 19.05 oz) (including batteries). Nikon S3700 has external dimensions of 96 x 58 x 20 mm (3.78 x 2.28 x 0.79″) and weighs 118 g (0.26 lb / 4.16 oz) (including batteries).
Below you can see the front-view size comparison of the Canon 77D and the Nikon S3700. Nikon S3700 is clearly the smaller of the two cameras. Its body is 35mm narrower, 42mm shorter and 56mm thinner than Canon 77D. As you can tell, actually this is not a fair size comparison since Nikon S3700 has a built-in lens but Canon 77D doesn't. Once you put a lens on 77D, its thickness will increase significantly.
Here is the back view size comparison of the Canon 77D and Nikon S3700.
Now lets look at the top view comparison of Canon 77D and Nikon S3700.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S3700 is significantly lighter (422g ) than the Canon 77D which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on 77D, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Canon EOS 77D / EOS 9000D nor Nikon Coolpix S3700 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 DSLR Cameras with Weather Sealing Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Canon 77D's 3.00" LCD screen is slightly larger than Nikon S3700's 2.7 screen.
Moreover, Canon 77D 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, Nikon S3700 has a fixed type screen which provides almost no flexibility in shooting positions compared to 77D.