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 Canon SX410 IS and Panasonic GH2 side-by-side from the front, back and top in their relative dimensions. Canon SX410 IS has external dimensions of 104 x 69 x 85 mm (4.09 x 2.72 x 3.35″) and weighs 325 g (0.72 lb / 11.46 oz) (including batteries). Panasonic GH2 has external dimensions of 124 x 90 x 76 mm (4.88 x 3.54 x 2.99″) and weighs 442 g (0.97 lb / 15.59 oz) (including batteries).
Below you can see the front-view size comparison of the Canon SX410 IS and the Panasonic GH2. Canon SX410 IS is 20mm narrower and 21mm shorter than Panasonic GH2 but it is also 9mm thicker. As you can tell, actually this is not a fair size comparison since Canon SX410 IS has a built-in lens but Panasonic GH2 doesn't. Once you put a lens on GH2, its thickness will increase significantly.
Now lets look at the top view comparison of Canon SX410 IS and Panasonic GH2.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon SX410 IS is significantly lighter (117g ) than the Panasonic GH2 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 GH2, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Canon PowerShot SX410 IS nor Panasonic Lumix DMC-GH2 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
Canon SX410 IS and Panasonic GH2's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Panasonic GH2 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. Canon SX410 IS's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to GH2.