Canon EOS40D 162, Fn IV -5 Focusing Screen, Ef-A Ef-D Ef-S About focusing screen characteristics

3Custom Function SettingsN

C.Fn IV -5 Focusing Screen

The camera provides interchangeable focusing screens. This Custom Function must be set so that the exposure correction matches the respective focusing screen.

0:Ef-A

1:Ef-D

2:Ef-S

About focusing screen characteristics

Ef-A: Standard Precision Matte

Standard focusing screen that comes with the camera. Provides good viewfinder brightness and enables easy manual focusing.

Ef-D: Precision Matte with grid

This is the Ef-A with a grid. It makes it easier to align horizontal or vertical lines.

Ef-S: Super Precision Matte

Focusing screen which makes manual focusing easier than with the Ef-A. Effective for users who mainly focus manually.

About Super Precision Matte Ef-S and Maximum Lens Aperture

This is optimized for f/2.8 and faster lenses.

If the lens is slower than f/2.8, the viewfinder will look darker than with Ef-A.

Since the standard Ef-A focusing screen comes with the EOS 40D, C.Fn IV -5-0 is already set.

To change the focusing screen, refer to the instructions that came with the focusing screen.

The C.Fn IV -5 setting is not included in the registered camera user settings (p.165).

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