There are no implications regarding special relativity. The propagation speeds of the triggering signal are well understood. If for some insane reason it's not considered fast enough to simply ignore delays from one side of the chip to the other (wherever the sync signal comes in), it's straightforward to put in delay lines to ensure everything triggers at the same time to an accuracy that depends on the amount of silicon you want to lay down for those delay lines relative to the capacitors.
Most likely a couple nanoseconds one way or another don't matter (even at timescales of 1/80,000 s) and those ever-so-slight differences are ignored.
I meant in a theoretical sense, like as a thought experiment. If the shutter were an idealized, global shutter, where each row of pixels are exposed instantaneously, what would be the special relativity implications, if any?
Unless the sensor is half over the event horizon of a black hole I'm failing to understand how my answer doesn't short-circuit the thought experiment to ground.
Most likely a couple nanoseconds one way or another don't matter (even at timescales of 1/80,000 s) and those ever-so-slight differences are ignored.