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- #31
Far as I know canons development announcement didn't actually have anything but a mockup design. That means it was either just a designed outer shell and no components or an early test model. From then till now is 2 years - not all that long to develop, test and put the lens into mass production (lets not forget that their lens line up has been under revision - heck the 400mm, 500mm and 600mm remakes got delayed by about half a year or more due to production problems*)
*sourcing materials if I recall right.
*sourcing materials if I recall right.