Canon today introduced a list of new high-end lenses. Although I plan to purchase none of them, I am particularly impressed with the MTF charts of the EF 8-15mm f/4 L:
At least in theory, this lens offers better resolution than many of the famed EF primes. It appears optical technology has finally reached the point where zoom lenses are every bit as good, if not better than, prime lenses. I look forward to seeing the next step.