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 80D and Pentax K-70 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). Pentax K-70 has external dimensions of 126 x 93 x 74 mm (4.94 x 3.66 x 2.91″) and weighs 688 g (1.52 lb / 24.27 oz) (including batteries).
Below you can see the front-view size comparison of the Canon 80D and the Pentax K-70. Pentax K-70 is clearly the smaller of the two cameras. Its body is 13mm narrower, 12mm shorter and 5mm thinner than Canon 80D.
Here is the back view size comparison of the Canon 80D and Pentax K-70.
Now lets look at the top view comparison of Canon 80D and Pentax K-70.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax K-70 is 42g lighter than the Canon 80D 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 also have to take into account the lenses that you will be using with these bodies. Since both Canon 80D and Pentax K-70 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
Both the 80D and the K-70 have weather sealings in their bodies, making them resistant to water and dust.
LCD Screen Size and Features
Canon 80D and Pentax K-70's LCD screens have the same diagonal size of 3.00 inches.
Both cameras feature
Fully Articulating screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. Fully articulating screens are also useful for taking Selfies and video.