The camera was designed to provide maximum image quality in the smallest possible body.

It is slightly larger than the earlier GM1, as it adds a flash hot shoe, an electronic viewfinder and a rear scroll-wheel for adjusting settings.

However, with a body roughly the same size as a pack of playing cards, it is still extremely small for a system camera.

This is roughly a quarter the size of a full-frame sensor - resulting in a 2:1 crop-factor for lenses and a two-stop difference in terms of light-gathering.

It has attained a cult status, and is one of only a very few digital cameras to sell for higher prices second-hand than it did when new.