EFS Focusing Screen EF-s
Canon EF-S Focusing Screen for EOS 40D Digital SLR Camera - Optimized for Fast Wide Aperture Lenses
Canon Focusing Screen EF-S - Exclusively for the EOS 40D, this focus screen is optimized for wide-aperture lenses from f/1.8 thru 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.
* Product descriptions and part numbers are subject to change, and may not reflect
manufacturer product changes. Please check the manufacturer's website and use the
item's manufacturer part number to find the most up to date product description.
Warranty: 12 months manufacturer warranty