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 Sony A7c and Sony A6100 side-by-side from the front, back and top in their relative dimensions. Sony A7c has external dimensions of 124 x 71 x 60 mm (4.88 x 2.8 x 2.36″) and weighs 509 g (1.12 lb / 17.95 oz) (including batteries). Sony A6100 has external dimensions of 120 x 67 x 59 mm (4.72 x 2.64 x 2.32″) and weighs 396 g (0.87 lb / 13.97 oz) (including batteries).
Below you can see the front-view size comparison of the Sony A7c and the Sony A6100. Sony A6100 is clearly the smaller of the two cameras. Its body is 4mm narrower, 4mm shorter and 1mm thinner than Sony A7c.
Here is the back view size comparison of the Sony A7c and Sony A6100.
Now lets look at the top view comparison of Sony A7c and Sony A6100.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony A6100 is significantly lighter (113g ) than the Sony A7c 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 also have to take into account the lenses that you will be using with these bodies. Since Sony A7c has a Full frame sensor and Sony A6100 has a smaller APS-C sensor, Sony A6100's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7c lenses.
Weather Sealing
With its weather-sealed body, we believe that the A7c has a big advantage over the A6100 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Sony A7c and Sony A6100's LCD screens have the same diagonal size of 3.00 inches.