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 T7 and Nikon D3500 side-by-side from the front, back and top in their relative dimensions. Canon T7 has external dimensions of 129 x 101 x 78 mm (5.08 x 3.98 x 3.07″) and weighs 475 g (1.05 lb / 16.76 oz) (including batteries). Nikon D3500 has external dimensions of 124 x 97 x 70 mm (4.88 x 3.82 x 2.76″) and weighs 365 g (0.80 lb / 12.87 oz) (including batteries).
Below you can see the front-view size comparison of the Canon T7 and the Nikon D3500. Nikon D3500 is clearly the smaller of the two cameras. Its body is 5mm narrower, 4mm shorter and 8mm thinner than Canon T7.
Here is the back view size comparison of the Canon T7 and Nikon D3500.
Now lets look at the top view comparison of Canon T7 and Nikon D3500.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon D3500 is significantly lighter (110g ) than the Canon T7 which may become a big advantage especially on long walking trips.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you also have to take into account the lenses that you will be using with these bodies. Since both Canon T7 and Nikon D3500 have the same APS-C sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.
Weather Sealing
Unfortunately neither the Canon EOS Rebel T7 (EOS 2000D) nor Nikon D3500 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
LCD Screen Size and Features
Canon T7 and Nikon D3500's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.