Help Please on E Mount

[Arnie]

Can someone please tell me the difference between an " E mount" & "FE mount". I have an A7 iv camera which is an E mount. But when looking for an additional lens I keep seeing an FE mount is compatabile. If I bought an FE mount would I lose any features?

Thanks in advance

 

[Arnie]

Hi,
Thanks for that. I actually understand your answer. Some camera shops just lost me.
Brilliant.

 

[Arnie]

Hi,
Thanks again, I think for now anyway I'll stick to full frame only.

Thanks Brownie