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Sony's new A7R IV camera is a 61 MP full-frame mirrorless beast

Darrell Etherington
Sony's new A7R IV camera is a 61 MP full-frame mirrorless beast

Sony unveiled the latest in its line of interchangeable lens mirrorlesscameras on Tuesday, debuting the A7R IV, its top-of-the-line full-framedigital shooter aimed at pros