When i was young, i was on temporary contracts and changed two or three times. Since nearly 20 years my contract is unrestricted and now i am in the retirement age but extendet my contract, because there are not enough physicians in Germany and nobody wants to work in my field.
After the Sony 300/2.8 another small, lightweight, fast and not so expensive Super-Tele Primelens which fulfills (nearly) all whishes, but not from Canon.
Does anybody realy want to give away money for a lens with questionable and uncertain quality and performance, if you have a good alternative choice? For instance, you can buy a used EF 35/2 IS in good condition for 350€.