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 L31 and Canon 1D MIV side-by-side from the front, back and top in their relative dimensions. Nikon L31 has external dimensions of 96 x 59 x 29 mm (3.78 x 2.32 x 1.14″) and weighs 160 g (0.35 lb / 5.64 oz) (including batteries). Canon 1D MIV has external dimensions of 156 x 157 x 80 mm (6.14 x 6.18 x 3.15″) and weighs 1230 g (2.71 lb / 43.39 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon L31 and the Canon 1D MIV. Nikon L31 is clearly the smaller of the two cameras. Its body is 60mm narrower, 98mm shorter and 51mm thinner than Canon 1D MIV. As you can tell, actually this is not a fair size comparison since Nikon L31 has a built-in lens but Canon 1D MIV doesn't. Once you put a lens on 1D MIV, its thickness will increase significantly.
Comparison image of the Nikon L31 and the Canon 1D MIV Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Nikon L31 and Canon 1D MIV.
Comparison image of the Nikon L31 and the Canon 1D MIV Size and Weight - Back View
Now lets look at the top view comparison of Nikon L31 and Canon 1D MIV.
Top View Comparison image of the Nikon L31 and the the Canon 1D MIV Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon L31 is significantly lighter (1070g ) than the Canon 1D MIV 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 1D MIV, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the 1D MIV, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the L31.
LCD Screen Size and Features
Canon 1D MIV's 3.00" LCD screen is slightly larger than Nikon L31's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.