The 5D Mark III's Light Leak Issue Is Confirmed By Canon

By Andrew Liszewski on at

Ruh-roh. The new Canon 5D Mark III might be a fantastic camera and a real champ in low-light situations, but a recently discovered hardware flaw could pose problems for photographers shooting in the dark.

It turns out that in extremely dark conditions the backlight on the 5D Mark III's top LCD display panel leaks light into the camera's body, reaching the AE sensor and throwing off the camera's auto-exposure settings. The problem has been demonstrated in numerous online videos, and as a result Canon has issued an official product advisory on its site.

In extremely dark environments, if the LCD panel illuminates, the displayed exposure value may change as a result of the AE sensor's detection of light from the LCD panel.

The issue shouldn't affect everyone who's dropped £3,000 on a 5D Mark III. It's negligible in well-lit conditions, and is really only a problem when the LCD display's backlight is turned on. But we're curious how Canon plans to resolve this problem since it's not something a simple firmware update can fix. [Canon via PetaPixel]