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 Sony A35 and Sony A37 side-by-side from the front, back and top in their relative dimensions. Sony A35 has external dimensions of 124 x 92 x 85 mm (4.88 x 3.62 x 3.35″) and weighs 415 g (0.91 lb / 14.64 oz) (including batteries). Sony A37 has external dimensions of 124 x 92 x 85 mm (4.88 x 3.62 x 3.35″) and weighs 506 g (1.12 lb / 17.85 oz) (including batteries).
Below you can see the front view size comparison of Sony A35 and Sony A37. In this case, we can see that Sony A35 and Sony A37 have the exact same height, width and thickness.
Here is the back view size comparison of Sony A35 and Sony A37.
Now lets look at the top view comparison of Sony A35 and Sony A37.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony A35 is significantly lighter (91g ) than the Sony A37 which may become a big advantage especially on long walking trips.
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 Sony A35 and Sony A37 have the same Sony/Minolta Alpha lens mount and APS-C sized sensors, lenses will not be a differentiator on total size of the system.
Unfortunately neither Sony SLT-A35 nor Sony SLT-A37 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
Sony A35's 3" LCD screen is slightly larger than Sony A37's 2.6" screen.
On the other hand, Sony A37 LCD screen has a Tilting feature
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Sony A35 has a fixed type screen which provides less flexibility in shooting positions compared to A37.