If you want to believe that based upon Lenscore that's up to you.
Here are both MTF charts:


If you find one, feel free to share me reviews that say the opposite. This far all reviews and tests (except Lenscore) affirm the same: the new 300mm is sharper where it counts.
So either lenscore is right and everyone else is wrong or it's the opposite. I know what side I favor.
Here are both MTF charts:


If you find one, feel free to share me reviews that say the opposite. This far all reviews and tests (except Lenscore) affirm the same: the new 300mm is sharper where it counts.
So either lenscore is right and everyone else is wrong or it's the opposite. I know what side I favor.