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 Nikon D7000 and Canon ELPH 340 HS side-by-side from the front, back and top in their relative dimensions. Nikon D7000 has external dimensions of 132 x 105 x 77 mm (5.2 x 4.13 x 3.03″) and weighs 780 g (1.72 lb / 27.51 oz) (including batteries). Canon ELPH 340 HS has external dimensions of 100 x 58 x 22 mm (3.93 x 2.27 x 0.88″) and weighs 147 g (0.32 lb / 5.19 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon D7000 and the Canon ELPH 340 HS. Canon ELPH 340 HS is clearly the smaller of the two cameras. Its body is 32mm narrower, 47mm shorter and 55mm thinner than Nikon D7000. As you can tell, actually this is not a fair size comparison since Canon ELPH 340 HS has a built-in lens but Nikon D7000 doesn't. Once you put a lens on D7000, its thickness will increase significantly.
Now lets look at the top view comparison of Nikon D7000 and Canon ELPH 340 HS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon ELPH 340 HS is significantly lighter (633g ) than the Nikon D7000 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 D7000, the total kit will weigh much higher.
Weather Sealing
With its weather-sealed body, we believe that the D7000 has a big advantage over the ELPH 340 HS which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Nikon D7000 and Canon ELPH 340 HS'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.