Nearly all the lightest models have been discontinued, as smartphone cameras have rapidly improved and taken over their market. Some high-end smartphones now exceed several of these models in weight, sensorsize, and functionality. (For example, an iPhone 15 Pro Max weighs 221g, and a Galaxy S24 Ultra weighs 233g.)
The lightest mirrorless cameras in production today are the Olympus E-P7 at 337g and Sony ZV-E10 at 343g. The lightest models in production with an electronic viewfinder (EVF) are the Panasonic G100D at 346g and Canon R100 at 356g. With the exception of the E-P7's in-body image stabilization (IBIS), these models eschew certain hardware features, such as IBIS and weather sealing, that add weight. Most newer models include one or more of these features, as the bulk of the mirrorless camera sector has moved upmarket.[1]
Of these ultracompact models, the Micro Four Thirds cameras (Panasonic GM1, Panasonic GM5, and Z CAM E1) have by far the largest sensor, with an area nearly twice as large as Samsung's and Nikon's "1-inch" sensors and nearly eight times as large as the Pentax Q's sensor. On the other hand, Pentax was able to include in-body image stabilization in their Q-series bodies, because of the tiny sensors.
All digital Leica M cameras, such as the Leica M11, are technically mirrorless cameras. The M11, at 530 g,[9] is the lightest of them and nearly as light as some other cameras on this list here. But Leica M cameras are usually not considered mirrorless cameras and instead are grouped as rangefinder cameras, a differentiation dating back to when they co-existed with SLR cameras. Technically speaking, rangefinder cameras lack autofocus and employ a very different manual focusing method involving a rangefinder mechanism.
Lightest mirrorless cameras with a medium format sensor
More information Model, Weight ...
Medium format mirrorless cameras that weigh less than 800 grams
Sony introduced a mirrorless camera designed for industrial applications that has no screen or viewfinder and no internal battery. It is lighter than all other full-frame interchangeable lens cameras, and as with other
modular cameras it is designed to be attached to other hardware, e.g. a drone.