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 G12 and Olympus SP-810 UZ side-by-side from the front, back and top in their relative dimensions. Canon G12 has external dimensions of 112 x 76 x 48 mm (4.41 x 2.99 x 1.89″) and weighs 401 g (0.88 lb / 14.14 oz) (including batteries). Olympus SP-810 UZ has external dimensions of 106 x 76 x 74 mm (4.17 x 2.99 x 2.91″) and weighs 413 g (0.91 lb / 14.57 oz) (including batteries).
Below you can see the front view size comparison of Canon G12 and Olympus SP-810 UZ.
Here is the back view size comparison of Canon G12 and Olympus SP-810 UZ.
Now lets look at the top view comparison of Canon G12 and Olympus SP-810 UZ.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon G12 is 12g lighter than the Olympus SP-810 UZ but we don't think this will make a significant difference.
Unfortunately neither Canon PowerShot G12 nor Olympus SP-810 UZ provides any type of weather sealing in their body, 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 Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Olympus SP-810 UZ's 3" LCD screen is slightly larger than Canon G12's 2.8" screen.
On the other hand, Canon G12 sports a Fully Articulated screen
which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. On the other hand, Olympus SP-810 UZ has a fixed type screen which provides almost no flexibility in shooting positions compared to G12.