Canon Community

Does anyone know how long Backorder usually takes to receive an item? Thinking about purchasing R7.

The canon r7 says that it is compatible with lenses from the past present and future. I have a canon rebel t7 right now with a Canon EF lens 50mm 1:1.8 STM and I'm thinking about upgrading to the r7. Would this 50mm EF lens work on the r7 without any...