Posts Tagged ‘issue’

Canon 5D Mark III “Light Leak” Issue Alters Exposure by 1/3 of a Stop

A quick update on the “light leak phenomenon” on the 5D Mark III that Canon confirmed last week: after emailing Canon about the issue recently, photographer birdbrain received the following response:

Further to your enquiry we would like to inform you that we very recently (in April) have become aware of this and is now a known issue with the EOS 5D Mark III model. The AE sensor in the camera detects the light from the LCD panel when it is turned on and the exposure value will be altered. The change is not significant as it will be altered by approximately 1/3rd of a stop but can be noticeable. You can continue to use your 5D Mark III and the LCD screen can be turned off to receive the correct exposure.

The video above shows examples of what this 1/3 stop difference does for nighttime photographs. The issue definitely isn’t a huge one (don’t cancel your orders), but the 5D Mark III is a $3,500 camera and it’ll be interesting to see how Canon decides to deal with this flaw.

(via DPReview via Canon Watch)

Canon Confirms “Light Leak” Issue in the 5D Mark III

Earlier this month, reports started emerging that Canon’s new 5D Mark III DSLR has a “light leak” issue. Photographers found that turning on the LCD backlight in a dark room directly affects the camera’s metering system (as seen in the video above). Canon published a product advisory today acknowledging the issue, saying,

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 phenomenon […] has been confirmed when using the Canon EOS 5D Mark III Digital SLR Camera. Canon is now examining the countermeasures and once the countermeasures are decided, we will post the information on our Web site.

Problem is, the issue isn’t limited to the LCD’s backlight in a dark room. Apparently any light (e.g. sunlight) shining onto the LCD screen can affect exposure.
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Facebook Has a Zombie Photo Problem

Ars Technica published an interesting story today about how photos uploaded to Facebook remain on their servers months — or even years — after they’re “deleted” from the service. We decided to test this out ourselves, uploading the above photo to Facebook, copying the direct URL to the image file, and then deleting both the photo and the album. As you can see from the hotlinked photo above, the image continues to live on as a zombie photo on Facebook’s CDN servers.
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