Is it possible to replace the focusing screen? (EOS 50D)
Solution
The focusing screens for the EOS cameras are as follows. For the details about how to replace the focusing screen, see the instruction manual for the focusing screen.
Ef series:
Ef-A(pre-installed)/Ef-D/Ef-S
NOTE
If you change the focusing screen, change this setting to match the focusing screen type. For the details about how to replace the focusing screen, see the instruction manual for the focusing screen.