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 Fujifilm X-T200 and YI M1 side-by-side from the front, back and top in their relative dimensions. Fujifilm X-T200 has external dimensions of 121 x 84 x 55 mm (4.76 x 3.31 x 2.17″) and weighs 370 g (0.82 lb / 13.05 oz) (including batteries). YI M1 has external dimensions of 114 x 64 x 34 mm (4.49 x 2.52 x 1.34″) and weighs 350 (including batteries).
Below you can see the front view size comparison of Fujifilm X-T200 and YI M1. YI M1 is clearly the smaller of the two cameras. Its body is 7mm narrower, 20mm shorter and 21mm thinner than Fujifilm X-T200.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
YI M1 is 20g lighter than the Fujifilm X-T200 but we don't think this will make a significant difference.
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 Fujifilm X-T200 has an APS-C sized sensor and YI M1 has a smaller Four Thirds sensor, YI M1's lenses for a similar focal length and aperture will generally be lighter and smaller than the Fujifilm X-T200 lenses.
Unfortunately neither Fujifilm X-T200 nor YI M1 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 Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Fujifilm X-T200's 3.5 LCD screen is slightly larger than YI M1's 3" screen.
Moreover, Fujifilm X-T200 sports a Fully Articulated screen
which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. On the other hand, YI M1 has a fixed type screen which provides almost no flexibility in shooting positions compared to X-T200.