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 Samsung TL320 and Canon 400D side-by-side from the front, back and top in their relative dimensions. Samsung TL320 has external dimensions of 97 x 61 x 21 mm (3.82 x 2.4 x 0.83″) and weighs (including batteries). Canon 400D has external dimensions of 127 x 94 x 65 mm (5 x 3.7 x 2.56″) and weighs 556 g (1.23 lb / 19.61 oz) (including batteries).
Below you can see the front-view size comparison of the Samsung TL320 and the Canon 400D. Samsung TL320 is clearly the smaller of the two cameras. Its body is 30mm narrower, 33mm shorter and 44mm thinner than Canon 400D. As you can tell, actually this is not a fair size comparison since Samsung TL320 has a built-in lens but Canon 400D doesn't. Once you put a lens on 400D, its thickness will increase significantly.
Now lets look at the top view comparison of Samsung TL320 and Canon 400D.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Samsung TL320 is 556g lighter than the Canon 400D but we don't think this will make a significant difference.
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 400D, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Samsung TL320 (WB1000) nor Canon EOS 400D (EOS Digital Rebel XTi / EOS Kiss Digital X) 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 DSLR Cameras with Weather Sealing
LCD Screen Size and Features
Samsung TL320's 3.00" LCD screen is slightly larger than Canon 400D's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.