I know physicists don't often like to hear about "photon's frame of reference", so I apologize in advance :)
If the time dilation at the speed on light is infinite, it should mean that if Bob is observing a photon traveling from the sun to the earth, then from the photon's frame of reference (sorry again:), no time should have passed for Bob from the moment of its emittance to the moment of it reaching earth.
How come then that in reality, roughly 8 minutes pass for Bob? How does the fact that light has a finite speed settle with the theory of infinite time dilation?
And one more thing: if the events of emittance and reaching the earth are simultaneous for the photon (sorry:), does that imply that the photon exists in a 4D space, where all events are simultaneous?