Panasonic, Leica, and Sigma will all use the same full-frame camera lenses

As the mirrorless camera battle reaches a turning point, three entrants are teaming up to help their cameras stand out. Leica, Panasonic, and Sigma announced today that they’ll all use the same lens mount format for full-frame and APS-C cameras, allowing lenses purchased for one company’s cameras to work on each other’s cameras.
That’s a huge benefit for two reasons: it makes their cameras more appealing to photographers who won’t find themselves locked into a sing