Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Sigma SD15 and Sigma SD14 side-by-side from the front, back and top in their relative dimensions. Sigma SD15 has external dimensions of 144 x 107 x 81 mm (5.67 x 4.21 x 3.19″) and weighs 750 g (1.65 lb / 26.46 oz) (including batteries). Sigma SD14 has external dimensions of 144 x 107 x 81 mm (5.67 x 4.21 x 3.19″) and weighs 750 g (1.65 lb / 26.46 oz) (including batteries).
Below you can see the front view size comparison of Sigma SD15 and Sigma SD14. In this case, we can see that Sigma SD15 and Sigma SD14 have the exact same height, width and thickness.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sigma SD15 and Sigma SD14 have exactly the same weight of 750g.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since both Sigma SD15 and Sigma SD14 have the same Sigma SA Bayonet lens mount and APS-C sized sensors, lenses will not be a differentiator on total size of the system.
Unfortunately neither Sigma SD15 nor Sigma SD14 provides any type of weather sealing in their body, 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 DSLR Cameras with Weather Sealing
LCD Screen Size and Features
Sigma SD15's 3" LCD screen is slightly larger than Sigma SD14's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.