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 Pentax K-70 and Sony A68 side-by-side from the front, back and top in their relative dimensions. 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). Sony A68 has external dimensions of 143 x 104 x 81 mm (5.63 x 4.09 x 3.19″) and weighs 610 g (1.34 lb / 21.52 oz) (including batteries).
Below you can see the front view size comparison of Pentax K-70 and Sony A68. Pentax K-70 is clearly the smaller of the two cameras. Its body is 17mm narrower, 11mm shorter and 7mm thinner than Sony A68.
Here is the back view size comparison of Pentax K-70 and Sony A68.
Now lets look at the top view comparison of Pentax K-70 and Sony A68.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony A68 is 78g lighter than the Pentax K-70 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 both Pentax K-70 and Sony A68 have the same APS-C sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.
With its weather sealed body, we believe that K-70 has a big advantage over A68 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Pentax K-70's 3" LCD screen is slightly larger than Sony A68's 2.7 screen.