Roger Cicala at LensRentals.com has put the two new Canon primes through a resolution test and compared them to other lenses in the Canon lineup.
A lot of people are still a bit confused by these two lenses, however their size and decent performance may find a place in the market.
The bottom line is these are both nice, sharp lenses. Certainly sharper than the current 24-70 f/2.8 L zoom (we’ll have to see if they’re sharper than the 24-70 Mk II) and better than the 24mm and 28mm lenses that they – well, I guess replace. Although I have trouble considering a lens a replacement when the price has jumped 200% to 300%.