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 Panasonic F5 and Canon G15 side-by-side from the front, back and top in their relative dimensions. Panasonic F5 has external dimensions of 97 x 58 x 22 mm (3.82 x 2.28 x 0.87″) and weighs 121 g (0.27 lb / 4.27 oz) (including batteries). Canon G15 has external dimensions of 107 x 76 x 40 mm (4.21 x 2.99 x 1.57″) and weighs 352 g (0.78 lb / 12.42 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic F5 and the Canon G15. Panasonic F5 is clearly the smaller of the two cameras. Its body is 10mm narrower, 18mm shorter and 18mm thinner than Canon G15.
Now lets look at the top view comparison of Panasonic F5 and Canon G15.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic F5 is significantly lighter (231g ) than the Canon G15 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-F5 nor Canon PowerShot G15 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
LCD Screen Size and Features
Canon G15's 3.00" LCD screen is slightly larger than Panasonic F5's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.