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 WX30 and Canon M side-by-side from the front, back and top in their relative dimensions. Sony WX30 has external dimensions of 92 x 52 x 19 mm (3.62 x 2.05 x 0.75″) and weighs 117 g (0.26 lb / 4.13 oz) (including batteries). Canon M has external dimensions of 109 x 66 x 32 mm (4.29 x 2.6 x 1.26″) and weighs 298 g (0.66 lb / 10.51 oz) (including batteries).
Below you can see the front-view size comparison of the Sony WX30 and the Canon M. Sony WX30 is clearly the smaller of the two cameras. Its body is 17mm narrower, 14mm shorter and 13mm thinner than Canon M. As you can tell, actually this is not a fair size comparison since Sony WX30 has a built-in lens but Canon M doesn't. Once you put a lens on M, its thickness will increase significantly.
Now lets look at the top view comparison of Sony WX30 and Canon M.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony WX30 is significantly lighter (181g ) than the Canon M 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 M, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Sony Cyber-shot DSC-WX30 nor Canon EOS M 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 Compact Cameras with Weather Sealing Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Sony WX30 and Canon M's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.