Recent tests on the cause of light leak issues with Sony a7
cameras have found that the leak is down to the design of the cameras.
Tests, carried out by lensrentals.com
, found that the light leak is more severe with the 35mm f/2.8 Sony lens mounted. It also found that the leak is worse when fiberoptic lights were shone into the lens release button area, and when shone directly above the lens mount and in the lower left quadrant of the mount.
These light leaks could have real world implications for some photographers, and several quick fixes were suggested, including putting a scrunchie around the lens barrel and taping over the lens release button with black electrical tape. It was also suggested that using a weather sealed lens may help.
Testers made it clear that this is not an isolated problem, and that light leak issues have been found with several other brands of camera, too.
We contacted Sony about the issue, and they said: "We are aware of reports of light leakage on the ILCE-7 and ILCE-7R. This issue does not affect any photographs taken in normal photographic conditions, however we are currently investigating the concerns that have been raised."