Solution
The following focusing screens are compatible with the camera. For details about how to change the focusing screen, refer to the Instruction Manual included with the focusing screen.
<Ec Series>
Ec-C6 (provided) /
Ec-A/Ec-B/Ec-L/
Ec-C*/Ec-C II*/Ec-C III*/Ec-C IV*/Ec-CV*/Ec-D*/Ec-H*/Ec-I*/Ec-N*/Ec-R*/Ec-S*
* Can be installed in the camera, but the correct exposure will not be obtained. Use a commercially-available light meter to shoot with manual exposure, or use exposure compensation while shooting.
NOTE
After changing the focusing screen, be sure to change the settings to match the screen type in order to ensure that you shoot with the correct exposure. For details about how to change the settings, refer to the Instruction Manual included with the camera.