Commenter helps Cicala find his orientation
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Commenter helps Cicala find his orientation

Things got interesting when they dug a little deeper. Having removed the rear screws from their metal-inlaid holes, they discovered two sensors attached around the lens's rear element. Since the element is static, Roger wasn't clear what their role was and hoped that he'd be able to rely-on (and recognise) the wisdom of the crowd. He was right to, as pro photographer Trenton Talbot immediately guessed that they were gyroscopic sensors. A look at the way they're orientated, relative to one another, along with a bit of Googling, suggests he's right: they appear to be Epson gyro sensors, presumably feeding information to the lens's stabilisation system.