I just transitioned from Canon to Sony, and I bought myself a Sony a9, however, I do not have any Sony glasses period. What I would like to know is. 1. Can I use an adapter like MC-11 or Meta-bones on a brand new body(just a day old) ? Are there any chances of messing up the sensor or anything else in the body ? 2. Couple of people suggested me to start using native lens for a while and then to begin using adapters for other lenses such as Canon and Nikon. 3. I do mostly Wildlife and I have a canon 400 2.8. Thank you.