Areas that are slightly out of focus will appear more out of focus, making it easier to tell when focus is right-on. Note, however, that with lenses that have a maximum aperture smaller than f/2.8, a Super Precision Matte screen will appear dark and grainy. Different versions of the Super Precision Matte screen are available for EOS-1 series models, EOS 5D, EOS 5D Mark II, and EOS 40 D-60 D series.
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