First, please let me apologize for my lack of proper vocabulary. 😃
I have a Canon EOS R50 with the stock 18 to 45 lens.
I need a stronger telephoto capability, to take bird pictures, the moon, get that lone oak tree out in a field etc. There are devices that one can place between the lens and the body to <<telephoto more>>, right? Would it be better to get one of these or to buy another whole lens? I am assuming the adapter would be less expensive. Money is a factor. (isn’t it always?)
Only certain mirrorless lenses ate compatible with teleconverters, and that one isn’t. Teleconverters are also surprisingly expensive. RF mount is also expensive because Canon banned third party lenses entirely until recently and continues to heavily restrict them.