PainMeds writes: Magic Lantern is an open source "free software add-on" that "adds a host of new features to Canon EOS cameras that weren't included from the factory by Canon". One of ML's newest features is a module named Dual ISO, which takes advantage of the sensor in some of Canon's high-end cameras (such as the 5D MK II and MK III) to allow the camera to capture an image in two different ISOs, greatly expanding the dynamic range of the camera, and bringing its dynamic range closer to Nikon's popular D800 and D4.
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