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 Canon 80D and Nikon D780 side-by-side from the front, back and top in their relative dimensions. Canon 80D has external dimensions of 139 x 105 x 79 mm (5.47 x 4.13 x 3.11″) and weighs 730 g (1.61 lb / 25.75 oz) (including batteries). Nikon D780 has external dimensions of 144 x 116 x 76 mm (5.67 x 4.57 x 2.99″) and weighs 840 g (1.85 lb / 29.63 oz) (including batteries).
Below you can see the front view size comparison of Canon 80D and Nikon D780. Canon 80D is 5mm narrower and 11mm shorter than Nikon D780 but it is also 3mm thicker.
Here is the back view size comparison of Canon 80D and Nikon D780.
Now lets look at the top view comparison of Canon 80D and Nikon D780.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon 80D is 110g lighter than the Nikon D780 but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Nikon D780 has a Full frame sensor and Canon 80D has a smaller APS-C sensor, Canon 80D's lenses for a similar focal length and aperture will generally be lighter and smaller than the Nikon D780 lenses.
Both 80D and D780 have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Nikon D780's 3.2" LCD screen is slightly larger than Canon 80D's 3" screen.