Canon Focusing Screen EF-S for 40D

Exclusively tailored for the EOS 40D, this focus screen is optimised for wide-aperture lenses from f

Exclusively tailored for the EOS 40D, this focus screen is optimised for wide-aperture lenses from f/1.8 through f/2.8. Areas that are slightly out of focus appear more out of focus, making it easier to tell when focus is right-on. It is ideal for users who frequently manually focus in dim light with fast lenses.

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