Buy from Amazon.com : http://fave.co/1Ip46Xl <br /><br />Canon Ec-S Focusing Screen for EOS-1D Mark II N Digital SLR Camera<br /><br />Product Description : <br />Focusing screen features super precision matte <br />Makes it easy to determine the precise point of the sharpest focus <br />Essential for manual focusing shots <br />Microlens on the screens matte is optimally shaped to increase defocusing near the point of focus <br />Canon recommends use with f28 or brighter lenses
