After several test Dpreview found that Fujifilm X10 showing White Disc blooming or Sensor blooming, After shooting bright light sources dpreview found that “white discs” surrounding the light source that are caused by sensor blooming, Fuji promised to release a firmware update soon that will minimise the white disc problem
Fuji Said
‘Fujifilm engineers have examined a number of sample shots and have concluded that the camera is working within prescribed tolerances. The blooming issue is something not uncommon to many types of digital camera. It is possible to reduce the effects of blooming either by increasing the ISO or widening the dynamic range on the camera.
However, after receiving a number of comments from users, we can understand their concern and plan a firmware upgrade to lessen the effects of blooming. We will announce in due course when the upgrade will be available.’