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 G1 X III and Sony A68 side-by-side from the front, back and top in their relative dimensions. Canon G1 X III has external dimensions of 115 x 78 x 51 mm (4.53 x 3.07 x 2.01″) and weighs 399 g (0.88 lb / 14.07 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 Canon G1 X III and Sony A68. Canon G1 X III is clearly the smaller of the two cameras. Its body is 28mm narrower, 26mm shorter and 30mm thinner than Sony A68. As you can tell, actually this is not a fair size comparison since Canon G1 X III has a built-in lens but Sony A68 doesn't. Once you put a lens on A68, its thickness will increase significantly.
Here is the back view size comparison of Canon G1 X III and Sony A68.
Now lets look at the top view comparison of Canon G1 X III and Sony A68.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon G1 X III is significantly lighter (211g ) than the Sony A68 which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on A68, the total kit will weigh much higher.
With its weather sealed body, we believe that G1 X III has a big advantage over A68 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Canon G1 X III's 3" LCD screen is slightly larger than Sony A68's 2.7 screen.