The actual annular portion, in which the sun appears as a thin ring, will be about four minutes long, Newmark said.

CNN: Upcoming solar eclipse to project 'ring of fire'

Specifically designed to take advantage of the camera's mirrorless design, the X-Mount has a short flange back distance of just 17.7mm made possible by designing the mount ring as thin as 2.5mm.

ENGADGET: Fujifilm grows X-series mirrorless lineup with 16.3-megapixel X-E1