Bassat wrote in post #18000368
If premium IQ is the goal, there are already very good 500mm & 600mm primes in Canon's lineup. Canon is not going to kill sales of current glass to introduce a loss leader.
I think that with this statement, you really explained the crux of the issue.
Canon needs to make sure that if they introduce a 500 or 600mm f5.6 lens, that it does not steal any sales away from the $10,000+ f4 versions.
As we have seen with the popularity of the third party 150-600mm zooms, there are a lot of people who want the reach of a 500mm or 600mm lens without having to pay $10,000 to get it.
Canon's job is to make sure that they can't get $10,000 performance for less than $10,000.
So, they will have to figure out ways to cripple the lens so that people who are real nit-picky about image quality and performance are not able to "cheap out" by getting a f5.6 version.
When Canon does offer a 500mm or 600mm f5.6 lens, I don't think it will be an "L" quality lens.
If they were up to true "L" standards, they would probably cost $4,000 or thereabouts, which would really hurt the sales of the current $10,000+ super telephotos.
It'd be better for Canon's profits for them to make a flimsy non-L version for around $2,000 - I don't think that would hurt the sales of the huge whites very much.
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