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 Sony A68 and Canon SL3 side-by-side from the front, back and top in their relative dimensions. 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). Canon SL3 has external dimensions of 122 x 93 x 70 mm (4.8 x 3.66 x 2.76″) and weighs 449 g (0.99 lb / 15.84 oz) (including batteries).
Below you can see the front-view size comparison of the Sony A68 and the Canon SL3. Canon SL3 is clearly the smaller of the two cameras. Its body is 21mm narrower, 11mm shorter and 11mm thinner than Sony A68.
Here is the back view size comparison of the Sony A68 and Canon SL3.
Now lets look at the top view comparison of Sony A68 and Canon SL3.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon SL3 is significantly lighter (161g ) than the Sony A68 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 Sony A68 and Canon SL3 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 Sony SLT-A68 nor Canon EOS Rebel SL3 (EOS 250D / EOS Kiss X10) 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 SL3's 3.00" LCD screen is slightly larger than Sony A68's 2.7 screen.