Originally posted by Kunzite Don't even try. I'm not talking BS here.
The 28-105 was made from what some clueless people are calling "the 4.0 35-80 patent".
The Patent of the 70-200 is much older and it's a standard process that a badge of prototypes and patents developed together.
The current patent of the 100-300 is not a prototype like the first here known patent of the 70-200.
It's a preseries patent.
There were 2 different own projects of the current lens and the 100-300.
Since 2 years 100-300 project,70-200 start up is 4 years old.
There are minimum 3 full patents of the 70-200.
And take everything with a little bit more fun and humor maybe,life is hard enough
Best regards